PHT - MIL-DTL-83723 - Circular Connectors - Brochure

MIL-DTL-83723F 20 October 2000SUPERSEDING MIL-C-83723E 15 May 1992 DETAIL SPECIFICATIONCONNECTORS, ELECTRICAL, (CIRCULAR, ENVIRONMENT RESISTING),RECEPTACLES AND PLUGS, GENERAL SPECIFICATION FORThis specification is approved for use by all Departments and Agencies of the Department of Defense.1. SCOPE1.1 Scope. This specification covers the general requirements for environment resisting, circular,electrical connectors and their associated contacts and accessories. These connectors must utilize crimpor solder contacts and be capable of operation within the specified range (see 3.4.6.1).1.1.1 Series description. Basic series of connectors are as follows:a. Series I - Type B bayonet coupling. Transferred to MIL-C-26482 series II, as applicable (see 6.5.1).b. Series II - Type T threaded coupling, intermateable with MIL-DTL-5015. (Inactive for new design,use: MS3450, MS3451, MS3452, MS3456, and MS3459 of MIL-DTL-5015, as applicable.)c. Series III - Type T threaded and type B bayonet coupling connectors, intermateable with applicableMIL-C-26500 connectors (see section 6). In addition, requirements for hermetic receptacles withnonremovable contacts are included. The hermetic receptacle must mate with the appropriatebayonet or threaded type connector and must meet the same temperature requirements.AMSC N/A FSC 5935DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.INCH - POUNDBeneficial comments (recommendations, additions, deletions) and any pertinent data which may beof use in improving this document should be addressed to: Defense Supply Center Columbus,ATTN: VAI, P.O Box 3990, Columbus, OH 43216-5000 by using the self-addressed StandardizationDocument Improvement Proposal (DD form 1426) appearing at the end of this document or by letter.MIL-DTL-83723F21.2 Classification. The classes and types (either bayonet or threaded coupling) are as follows:Class Type Applicable series DescriptionB IIIAT II, IIIAluminum shell, anodize, nonconductive finish, fluid resistant insert.F Cancelled, superseded by class R.B IIIGT II, IIIStainless steel shell, passivated, fluid resistant insert.B IIIH(Hermetic) T II, IIISteel shell, tin finish, fluid resistant, interfacial sealing gasket, solder cup contacts.B IIIJ(Hermetic) T II, IIISteel shell, tin finish, fluid resistant interfacial sealing gasket, eyelet contacts.K(Firewall)T II, III Stainless steel shell, passivated, fluid resistant insert.L(Hermetic)T III Receptacles, electrodeposited nickel finish, fluid resistant insert, eyelet contacts.N T IIIPlugs, electrodeposited nickel finish, fluid resistant insert, RFI grounding, firewall, self locking. Receptacles, electrodeposited nickel finish, fluid resistant insert, hermetic, solder cup contacts.B IIIP(Hermetic) T IIIStainless steel shell, passivated, fluid resistant interfacial sealing gasket, eyelet contacts.B IIIRT II, IIIAluminum shell, electroless nickel, conductive finish, fluid resistant insert.S T IIIStainless steel shell, passivated, fluid resistant insert, firewall (plug and receptacle) RFI grounding, self locking (plug).B IIIWT II, IIIAluminum shell, cadmium, conductive finish 500 hours salt spray, fluid resistant insert.B IIIY(Hermetic) T IIIStainless steel shell, passivated, fluid resistant interfacialsealing gasket, solder cup contacts.1.2.1 Connector classes physical feature. The connector classes physical feature will be specified intable I.MIL-DTL-83723F3TABLE I. Connector classes physical feature.Class A G H J K LHermeticNFirewallNHermeticP R S W YSeries II X X X X X X XSeries III X X X X X X X X X X X X XBayonetcouplingX X X X X X X XThreadedcouplingX X X X X X X X X X X X XSolderhermeticX X XEyelet X X XCrimp X X X X X X XGroundingfingersX X X XFirewall X X XTemperature ?C200 200 150 150 200 200 200 200 200 200 200 175 200Self-lockingcoupling nutseries III,type TX 1/X X X X 1/X 1/X 1/ See the applicable slash sheets in the connector specifications for self-locking feature availability.1.3 Shell sizes and insert arrangements. Shell sizes and insert arrangements will be as specified inMIL-STD-1651 for series II and MIL-STD-1554 for series III.1.4 Insert position. For all series II and III, positions N through 5, the insert position is the angularposition of the insert relative to the master key or keyway of the shell. For series III, positions 6 through Y,the centerline of the insert is aligned on the centerline of the master key/keyway and the angular positionsof the minor key/keyway are rotated in reference to the master key/keyway of the shell. Insert positionsother than normal must be indicated by the letter shown in MIL-STD-1651 for series II, and by the numeralor letter shown in MIL-STD-1554 for series III.1.5 Accessories. Accessories must consist of the items as specified in the supplement to thisdocument.2. APPLICABLE DOCUMENTS2.1 Government documents.2.1.1 Specifications, standards, and handbooks. The following specifications, standards, andhandbooks form a part of this document to the extent specified herein. Unless otherwise specified, theissues of these documents are those listed in the issue of the Department of Defense Index ofSpecifications and Standards (DoDISS) and supplement thereto, cited in the solicitation (see 6.2).MIL-DTL-83723F4SPECIFICATIONSFEDERALQQ-N-290 - Nickel Plating (Electrodeposited).QQ-P-416 - Plating, Cadmium (Electrodeposited).DEPARTMENT OF DEFENSEMIL-DTL-5015 - Connectors, Electrical, Circular Threaded, AN Type, GeneralSpecification for.MIL-S-7742 - Screw Threads, Standard, Optimum Selected Series:General Specification for.MIL-A-8625 - Anodic Coating, for Aluminum and Aluminum Alloys.MIL-F-14072 - Finishes for Ground Based Electronic Equipment.MIL-DTL-22520 - Crimping Tools, Wire Terminal, General Specification for.MIL-R-25988/3 - Rubber, Fluorosilicone Elastomer, Oil and Fuel Resistant, O-Rings,Class I, Grade 60.MIL-C-26074 - Coatings, Electroless Nickel, Requirements for.MIL-C-39029 - Contacts, Electrical Connector, General Specification For.MIL-C-39029/4 - Contacts, Electrical Connector Pin, Crimp Removable,(For MIL-C-26482 Series II, MIL-C-81703 Series III, MIL-C-83723 SeriesI and III Connectors).MIL-C-39029/5 - Contacts, Electrical Connector Socket, Crimp Removable,(For MIL-C-26482 Series II, MIL-C-81703 Series III, MIL-C-83723 SeriesI and III, and MIL-C-83733 Connectors and MIL-S-12883/40 and /41Relay Sockets).MIL-C-39029/7 - Contacts, Electrical Connector, Pin, Crimp Removable, Shielded,(For MIL-C-26482 Series II, and MIL-C-81703 Connectors).MIL-C-39029/8 - Contact, Electrical Connector, Socket, Crimp Removable, Shielded,(For MIL-C-26482 Series II and MIL-C-81703 Series III Connectors).MIL-C-39029/9 - Contacts, Electrical Connector, Pin, Crimp Removable, Thermocouple,MIL-C-26482 Series II, MIL-C-81703 Series III, MIL-C-83723 Series III,and MIL-C-83733 Connectors).MIL-C-39029/10 - Contact, Electrical Connector, Socket, Crimp, Removable,Thermocouple, (For MIL-C-26482 Series II, MIL-C-81703 Series III,MIL-C-83723 Series III, and MIL-C-83733 Connectors).MIL-C-39029/29 - Contacts, Electrical Connector, Pin, Crimp Removable,(For MIL-C-5015 Series MS3450 and MIL-C-83723 Series II Connectors).MIL-C-39029/30 - Contacts, Electrical Connector, Socket, Crimp Removable,(For MIL-C-5015 Series MS3450 and MIL-C-83723 Series II Connectors).MIL-C-39029/73 - Contacts, Electrical Connectors, Socket, Solder, Removable, Shielded,Size 12 (For MIL-C-26482 Series II, MIL-C-83723 Series III, and MIL-C-C-83733, and DoD-C-83527 Connectors).MIL-C-39029/74 - Contacts, Electrical Connector, Pin, Crimp Removable, Shielded, Size 16(For MIL-C-38999 Series 1, 2, 3, 4, and MIL-C-24308 Connectors).MIL-DTL-83723F5MIL-C-55330 - Connectors, Preparation for Delivery of.MIL-I-81969/14 - Installing and Removal Tools, Connector, Electrical Contact, Type III,Class 2 Composition B.MIL-I-81969/15 - Installing and Removal Tools, Connector, Electrical Contact, Type II,Class 2, Composition A.MIL-I-81969/29 - Installing and Removal Tools, Connector, Electrical Contact, Type II,Class 1, Composition B.MIL-C-85049 - Connector Accessories, Electrical General Specification for.STANDARDSDEPARTMENT OF DEFENSEMIL-STD-1285 - Marking of Electrical and Electronic Parts.MIL-STD-1344 - Test Methods for Electrical Connectors.MIL-STD-1554 - Insert Arrangements for MIL-C-83723 Series III and MIL-C-26500Environment Resisting Circular, Electrical Connectors.MIL-STD-1651 - Insert Arrangements for MIL-C-5015, MIL-C-22992 (Classes C, J, andR), and MIL-C-83723 (Series II) Electrical Connectors.MS3155 - Connector, Electric, Rear Accessory Design Standard.MS3186 - Connector, Mounting to Connectors, Mounting Nuts, Plain, Hexagon.HANDBOOKDEPARTMENT OF DEFENSEMIL-HDBK-454 - Standard, General Requirement for Electrical Equipment.(See supplement 1 for associated list of specification sheets and military standards.)(Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks areavailable from the Standardization Documents Order Desk, Building 4D, 700 Robbins Avenue,Philadelphia, PA 19111-5094.)2.2 Non-Goverment publications. The following documents form a part of this document to the extentspecified herein. Unless otherwise specified, the issues of the documents which are DoD adopted arethose listed in the issue of the DoDISS cited in the solicitation. Unless otherwise specified, the issues ofdocuments not listed in DoDISS are the issues of the documents cited in the solicitation (see 6.2).AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)ANSI B46.1 - Surface Texture (Surface Roughness, Waviness and Lay).ANSI C83.1 (RS-359) - Standard Colors for Color Identification and Coding.ANSI/NCSL Z540-1 - Calibration Laboratories and Measuring and Test Equipment – GeneralRequirements.MIL-DTL-83723F6(Application for copies should be addressed to the American Standards Institute, 1430 Broadway, NewYork, N.Y. 10018, or the Electronic Industries Association, 2001 Eye Street, N.W., Washington, D.C.20006.)AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)ASTM-B488 - Gold for Engineering Uses, Electrodeposited Coating of.ASTM-B545 - Standard Specification for Electrodeposited Coatings of Tin.(Application for copies should be addressed to the American Society for Testing and Materials, 100 BarrHarbor Drive, West Conshohocken, PA 19428-2959.)(Non-Government standards and other publications are normally available from the organizations thatprepare or distribute the documents. These documents also may be available in or through libraries orother informational services.)2.3 Order of precedence. In the event of a conflict between the text of this document and thereferences cited herein (except for related associated detail specifications, or specification sheets), thetext of this document takes precedence. Nothing in this document, however, supersedes applicable lawsand regulations unless a specific exemption has been obtained.3. REQUIREMENTS3.1 Specification sheets. The individual item requirements shall be as specified herein and inaccordance with the applicable specification sheet. In the event of any conflict between the requirementsof this specification and the specification sheet, the latter shall govern.3.2 Qualification. Connectors and accessories furnished under this specification shall be productswhich are authorized by the qualifying activity for listing on the applicable qualified products list, (QPL) atthe time of award for contract (see 4.4 and 6.3).3.3 Materials. Materials which are not specified (see 3.1), or which are not specifically described hereinshall be of the lightest practical weight and suitable for the purpose intended.3.3.1 Dissimilar metals. When dissimilar metals are employed in intimate contact with each other,suitable protection against electrolytic corrosion shall be provided as specified in requirement 16 ofMIL-HDBK-454.3.3.2 Nonmagnetic materials (except classes H, K, N, S, and Y). The relative permeability of the wired,assembled and fully mated connector assembly shall be less than 2.0? when tested as specified inmethod 3006 of MIL-STD-1344.3.3.3 Contact materials and plating.3.3.3.1 Hermetic receptacle contacts. Unless otherwise specified (see 3.1), contacts shall be of ferrousalloy which shall be plated in accordance with ASTM-B488 over a suitable underplating to the thicknessspecified (see 3.1).MIL-DTL-83723F73.3.3.2 Contact plating thickness (hermetic). When tested as specified in 4.7.35, contacts used inhermetic connectors shall be gold plated to a minimum thickness of .000050 inch (0.00127mm)(see figure 1).3.3.3.3 Solder contacts (hermetics only). Solder contact material shall be as specified in 3.3.3.1. Solder contacts shall be nonremovable from the insert. Solder contacts shall be so designed that duringsoldering utilizing recommended soldering techniques and observing applicable temperature ranges nocomponents shall be damaged nor shall liquid solder escape from the solder cups. The solder cups shallbe designed to contain liquid solder when recommended soldering techniques are utilized.3.3.4 Dielectric materials.3.3.4.1 Seals and grommets. The resilient material used for seals and grommets shall have a shorehardness, electrical, and mechanical characteristics suitable for the purpose intended.3.3.4.2 Inserts. The nonresilient material used for inserts shall be a high grade rigid dielectric havingelectrical and mechanical characteristics suitable for the purpose intended. The impact strength shall besuch that the material shall not chip, crack or break during assembly or normal service.3.3.4.2.1 Fungus resistance. Finishes and materials shall be certified that they meet requirement 4 ofMIL-HDBK-454.3.3.4.2.2 Hydrolytic stability. All nonmetallic material shall pass a test to establish hydrolytic reversionresistance. The material shall meet the hydrolytic physical test requirements of one of the militaryspecification tests listed in MIL-HDBK-454, requirement 47, for a comparable material.3.3.4.2.3 Hermetic receptacles. Vitreous material shall be used for fusing to metal to insulate contactsand seal contacts.3.3.5 Shells and connector components. The materials used for shells and connector componentsshall be as follows:3.3.5.1 Classes A, R, and W.a. Shell: Series II and III Aluminum alloyb. Coupling ring and jam nut:Series II - Machined or die cast aluminum alloy.Series III - Machined aluminum alloy.c. Insert - Reinforced epoxy resin or other suitable rigid dielectric material.d. Bayonet pins - Corrosion-resistant steel.e. Spring fingers (for classes R and W plug) - Heat-treated beryllium copper or corrosion-resistant steel. Spring fingers shall be permanently retained.f. Gaskets, grommet, and interface seals - Silicone or fluorosilicone elastomer.MIL-DTL-83723F83.3.5.2 Classes G, K, N, S, and Y.a. Shell - Corrosion-resistant steel (stainless).b. Coupling ring and jam nut - Corrosion-resistant steel (stainless).c. Insert - Reinforce epoxy resin or other suitable rigid dielectric material. Fused vitreous material for classes Y and N hermetic. d. Bayonet pins - Corrosion-resistant steel.e. Spring fingers (for classes G, N, and S plug) - Heat-treated beryllium copper or corrosion-resistant steel. Spring fingers shall be permanently retained.f. Gaskets, grommet, and interface seals - Silicone or fluorosilicone elastomer.3.3.5.3 Class H.a. Shell - Cold rolled steel.b. Coupling ring and jam nut - Cold rolled steel.c. Insert - Fused vitreous material.d. Bayonet pins - Corrosion-resistant steel.e. Gaskets, grommet, and interface seals - Silicone or fluorosilicone elastomer.3.4 Design and construction. The connector shall be designed and constructed withstand handling andmaintenance functions incident to installation and service. Rear accessory interchangeability controldimensions of series III connectors shall be as specified on figure 2.3.4.1 Configuration. The connectors, contacts, and inserts shall conform to the configuration specified(see 3.1).3.4.2 Shell design. The connectors shall be of a single piece shell design of a homogeneous materialand no bonding or joining of any shell ancillary feature is permitted. The shells for the connectors shall bedesigned to accept and retain a cable support or accessory as specified (see 3.1).3.4.2.1 Connector shell. The connector shall be designed in such a manner as to incorporate either astatic or dynamic peripheral seal, or both a static and dynamic seal (see 3.4.3.2). For series IIIconnectors, a seal shall be located within the receptacle. For series II, the seal shall be located betweenthe plug shell and the coupling ring of the plug. RFI plug shells shall be designed so that electrical contactis assured between the spring fingers and the receptacle prior to full engagement of the contacts.3.4.2.2 Shell polarization. The polarization of the connector shall be accomplished by means of integralkey(s) and keyway(s) on the mating connectors. The polarization of the counterpart connector shall occurbefore the pin contacts enter the socket insert and coupling ring starts to engage. Series II connectorsshall have shell polarization in accordance with MIL-C-5015. Series III connectors shall have shellpolarization in accordance with MIL-STD-1554.3.4.2.3 Single hole mounting receptacles. The single hole mounting receptacle shall be provided with amounting nut in accordance with MS3186 with provision for locking the nut and an "O" ring from table II.MIL-DTL-83723F93.4.2.4 Screw threads. Screw threads shall be in accordance with MIL-S-7742. Out of roundness isnot objectionable provided threads can be checked without forcing thread gauges.3.4.2.5 Lubrication. The internal coupling ring threads on type T connectors, and the coupling ringbayonet grooves on the type B connectors, shall be coated with a suitable lubricant to comply with theperformance requirements of this specification.3.4.2.6 Connector engagement. Connectors shall be coupled and uncoupled by means of a couplingring on the plug shell. Engagement of the coupling ring shall occur after the plug and receptacle shells arepolarized. The series III connectors shall have the coupling ring permanently mounted on the plug.3.4.2.6.1 Type B connectors. The type B plug shall be coupled to its mating receptacle by means of agrooved coupling ring. The coupling ring shall be designed that the pin and socket contacts will engage asthe coupling ring is tightened in a clockwise direction and disengage as the coupling ring is loosened in acounterclockwise direction. A free rotating coupling ring, mechanically retained, shall be required to fullymate or unmate the type B plug to the receptacle by rotating the coupling ring through 120º maximum asspecified (see 3.1). The ring shall be knurled to aid gripping.3.4.2.6.2 Type T connectors. The type T plug shall be coupled to the mating receptacle by means of athreaded coupling ring. The coupling ring shall be designed that the pin and socket contacts will engageas the coupling ring is tightened in a clockwise direction and disengage as the ring is loosened in acounterclockwise direction. The coupling ring on other than self locking types shall have at least two .03inch diameter safety wire holes, equally spaced about the periphery (see 3.1). The ring shall be knurled toaid gripping, and the ring on series II connectors shall be retained by the rear accessory or othermechanical means.3.4.2.7 Coupling assurance (series III).3.4.2.7.1 Type B connectors. The coupling method shall be so designed that safety wiring of couplingring will not be required. Visual indicators, which indicate that the coupling ring is in the locked position,shall be provided as follows:The coupling pins on connector receptacles, dummy storage receptacles and protective caps forplugs shall have their end surfaces of a contrasting color and the ends of the pins shall be visiblethrough suitable holes or slots in the coupling ring.3.4.2.7.2 Type T connectors (series III).MIL-DTL-83723F10TABLE II. “0” Ring replacement PIN.MIL-R-25988/3 dash numbersShellsizeSeries IIflangeSeries III(applies to slash sheets73, 74, 84, 85 and 89)FlangeSeries III(applies to slashsheets 81 and 94)Flange8 017 0178S 02010S, 10SL 02210 019 01912 024 022 02212S 02414 026 023 02414S 032616 028 025 02616S 02818 029 027 02820 030 029 02922 030 13024 134 031 13228 138 03332 14236 14640 15044 15248 1533.4.2.7.2.1 Plugs (with self-locking coupling rings). The coupling mechanism shall be designed suchthat safety wiring of the coupling ring will not be required. Plugs shall include an anti-rotation couplingring.3.4.2.7.2.2 Receptacles. A red band shall be located on receptacle so as to be visible when unmatedand fully covered when completely mated.3.4.2.8 Backshell accessories. Backshells shall conform to requirements specified (see 3.1). Inaddition, they shall have wire sealing grommet compression capability. To prevent twisting the wiresealing grommet, a grommet ferrule of suitable material shall be supplied for compression sealing on allseries II connectors requiring threaded back shell accessories. Backshell assemblies for series IIIconnectors shall conform to MS3155 and MIL-C-85049.MIL-DTL-83723F113.4.2.9 Color band. The shells of crimp contact connectors shall have blue color bands in accordance with ANSI C83.1 (RS-359), indicating a rear release contact retention system. The location of the colorbands on the receptacle shall be in front of the flange and behind the flange or it can be on the flange inthe case of the single hole mount receptacle. The location of the color band on the plug shell shall be onthe coupling ring. Location shall be such that at least one color band is clearly visible when the connectoris mounted, and in either the mated or unmated condition.3.4.2.10 Bayonet pins. Bayonet pin positioning shall be as specified on figure 3.3.4.3 Seals.3.4.3.1 Pin insert interfacial seal. The face of the pin seal shall be of a resilient material bonded to theinsert to provide an interfacial seal.3.4.3.2 Peripheral seals. A resilient material, static or dynamic type peripheral seal, or both static anddynamic seal shall be provided around the receptacle inserts for series III connectors. Type B, series IIIconnectors shall have a dynamic peripheral seal. Type T, series III connectors shall have a static/dynamicseal or a peripheral seal. The peripheral seal on the series II connectors shall be provided as shown onapplicable specification sheet (see 3.1).3.4.3.3 Wire sealing members (rear grommet). The wire sealing member shall provide suitable sealingfor overall wire diameters listed in table III and shall not be removable from the shell.3.4.3.4 Sealing plugs (except hermetics). Grommet sealing plugs shall be used in the grommet cavitiescorresponding to all unwired contacts. Unless otherwise specified on the purchase order, connectors shallbe shipped with sealing plugs. Total quantity shall be 15 percent of size 12 and smaller, or one sealingplug, whichever is greater.TABLE III. Wire range accommodations.Contact size Minimum OD (inch) Maximum OD (inch)20 .040 .08316 .053 1/ .10312 .097 .1588 .164 .2554 .288 .3700 .415 .5501/ .068 for series II only.3.4.4 Inserts. The entire insert and wire sealing or wire supporting member of the environment resistingassemblies shall be essentially one integral part, designed to provide suitable sealing and support aroundthe wires and to be nonremovable. The rigid dielectric shall be one molded piece or no more than twopieces bonded so as to form essentially one integral piece. The design shall be such as to permit theremoval and replacement of individual contacts into their connector inserts with a MIL-I-81969/14,MIL-I-81969/15 and MIL-C-81969/29 installing and removal tools as applicable. The contact lockingMIL-DTL-83723F12device shall be contained in the rigid dielectric insert and shall so retain the contacts as to meet thecontact retention requirements of this specification. Inserts shall be secured to prevent rotation. All pincontact inserts shall have a resilient interface seal bonded to the front face in accordance with theapplicable standards. Socket entry holes and pin "donut" rings shall conform to figures 4 and 5 for seriesII connectors and to the applicable specification sheet for series III connectors. Sealing to coaxial cableterminated to shielded contacts may be accomplished by means of separate resilient bushings. Ifseparate resilient bushings are required, they shall be furnished with the connector.3.4.4.1 Insert arrangements. Insert arrangements shall conform to:Series II - MIL-STD-1651.Series III - MIL-STD-1554.3.4.4.2 Inserts (hermetics). The hermetics receptacle inserts shall be designed and constructed withproper sections and radii so that they will not readily chip, crack, or break during normal assembly orservice. Socket insert entry hole shall conform to figure 6. The inserts shall be nonremovable from theshell and shall meet the requirements of this specification.3.4.4.3 Contact installation and removal (except hermetics). The connector design shall permitindividual installation and removal of contacts without removing the insert or sealing members. Installationof the contacts into and removal of the contacts from the insert shall be accomplished from the rear of theconnector and with the aid of tools as specified in 3.4.5.5.3.4.4.4 Contact arrangement identification. The contact positions shall be permanently designated incontrasting color on the front face of the insert material and on the rear face of the wire sealing grommetas noted on the insert arrangement drawing in MIL-STD-1554 or MIL-STD-1651 as applicable. Theinterfacial marking of the inserts shall not be raised or recessed on any sealing surfaces and shall be asrequired by 3.7.2.3.4.4.5 Insert position. The inserts shall be positioned with respect to the shell within the tolerancespecified (see 3.1).3.4.4.6 Alternate insert position. Alternate insert position shall be as specified in MIL-STD-1651 or MIL-STD-1554, as applicable.3.4.4.7 Contact alignment. The alignment of the pin contact assembled in either plug or receptacleshall be within the true alignment position specified in MIL-STD-1554 or MIL-STD-1651, as applicable.3.4.4.7.1 Contact alignment (except hermetics only). Socket contacts assembled in either plug orreceptacle shall allow for contact float of .0025 to .0085 inch from true alignment position.3.4.4.7.2 Contact alignment (hermetics only). The alignment of the pin contact of the classes H, N, andY receptacles shall be as specified (see 3.1).3.4.5 Contacts. Contacts shall be designed for crimp termination in all but classes H and Y assemblieswhich shall be solderable. Crimp type contacts for series II shall conform to MIL-C-39029/29, /30 and forseries III to MIL-C-39029/4, /5, /7, /8, /9, /10, /73, and 74. Quantity of contacts shall be a full complementplus one spare for arrangements having 26 contacts or less and two spares, for arrangements havingMIL-DTL-83723F13more than 26 contacts. No spares shall be supplied with 0, 4, 8 or shielded contacts. Unless otherwisespecified on the purchase order, connectors shall be shipped with contacts. For indirect shipmentenvironmental resisting connectors may be ordered without contacts (See 6.2).3.4.5.1 Spring engagement (series II). The point of spring engagement for series II connectors shall beas shown on figures 4 and 5.3.4.5.2 Pin engaging end (hermetics only). The engaging end of pins shall be rounded or of a suitableconfiguration to allow for directing and centering of the pin in a mating socket contact and shall be asspecified (see 3.1).3.4.5.3 Contact termination. Hermetic connectors are designed for solder termination. All otherclasses are designed for crimp contacts (see 3.1).3.4.5.4 Surfaces roughness (hermetics only). The roughness height rating of all contact matingsurfaces, indicated on figure 1, shall be less than the value specified (see 3.1 and 4.7.34).3.4.5.5 Installing and removal tools. Both the MIL-I-81969/14 and the MIL-I-81969/29 tools shallproperly assemble and disassemble the pin and socket contacts into their connector inserts. ProvideM81969/14-xx tools for connectors with contact sizes 20, 16, 12, and 8. Provide M81969/29-xx tools forconnectors with contacts sizes 4 and 0. One MIL-I-81969/14 or MIL-I-81969/29 tool as applicable shall beenclosed in the unit package. For indirect shipments, connectors may be ordered without installing andremoval tools (see 6.2).3.4.5.6 Crimping tools. Crimping tools required to crimp contacts shall conform to MIL-DTL-22520.3.4.6 Plating.3.4.6.1 Shells and accessory hardware. The finish on shells and accessory hardware shall be inaccordance with the following letter designations:A - -65ºC to 200ºC hard, anodic nonconductive in accordance with MIL-F-14072,finish E516, or hard anodic, nonconductive in accordance with MIL-A-8625,type III, .0008 inch minimum thickness.G, K, S, and Y - -65ºC to 200ºC electrically conductive stainless steel, passivated.R - -65ºC to 200ºC, electrically conductive electroless nickel in accordance withMIL-C-26074, class 3 or 4, grade B.H - -65ºC to 150ºC, electrically conductive fused or bright tin in accordance withASTM B-545.N - -65ºC to 200ºC, Electrodeposited nickel in accordance with QQ-N-290, class 2,.0001 to .0002 inch thick.W - -65ºC to 175ºC, olive drab, cadmium in accordance with QQ-P-416 over asuitable underplate to withstand 500 hours salt spray test. Final finish shall beelectrically conductive.NOTE: The maximum operating temperature is the combination of the environment and current load.MIL-DTL-83723F143.5 Performance requirements. Connectors, contacts, and accessories shall be designed to meet theperformance requirements specified herein when tested in accordance with the specified methods ofsection 4.3.5.1 Visual and mechanical examination. Contacts, connectors, and accessories shall be examinedas specified in 4.7.1, and shall meet the requirements indicated herein.3.5.2 Gauge location. The axial location of contacts shall be measured as specified in 4.7.2, using testgauges simulating the contacts at minimum material conditions as specified (see 3.1). Gauge locationmeasurements shall fall within the range specified for series II connectors on figures 4 and 5, and onseries III specification sheets.3.5.3 Gauge retention. The test gauges (see 3.5.2) shall be retained in the contact cavities of crimpcontact connectors when subjected to the test of 4.7.3. The axial displacement of the test gauges whileunder load shall not exceed .012 inch.3.5.4 Maintenance aging (except hermetics). When tested as specified in 4.7.4, connectors shall becapable of meeting the performance requirements of this specification. Failure to complete theseoperations shall be cause for rejection.3.5.5 Contact retention. When tested as specified in 4.7.5, the axial displacement of the contacts shallnot exceed .012 inch. No damage to contacts or inserts shall result.3.5.6 Altitude-low temperature. After stabilizing the connector at an altitude of 80,000 feet and a lowtemperature of -50ºC +0ºC -4ºC as specified in 4.7.6, the connector shall withstand 625 V rms/60 Hz forone minute applied between adjacent contacts and between contacts and shell. There shall be noevidence of dielectric breakdown. With the test voltage removed and the temperature and pressurestabilized at ambient conditions, the connector shall meet the insulation resistance requirements of3.5.16.1 and the dielectric withstanding voltage requirements of 3.5.17 at sea level.3.5.7 Thermal shock (hermetics only). When tested as specified in 4.7.7, there shall be no damagedetrimental to the operation of the connector. Any evidence of damage resulting from this test shall because for rejection.3.5.8 Temperature cycling (except hermetics). When tested as specified in 4.7.8, there shall be nodamage detrimental to the operation of the connector. Any evidence of damage resulting from this testshall be cause for rejection.3.5.9 Air leakage (hermetics only). When tested as specified in 4.7.9, any evidence of leakagein excess of 0.01 micron ft3/h (1 X 10-7cm3/s) during the test shall be cause for rejection.3.5.10 Coupling torque (see 4.7.10).3.5.10.1 Coupling torque (type B only). When tested as specified in 4.7.10, the coupling torque formating and unmating of counterpart connectors, protective covers, and dummy storage receptacles shallmeet the torque requirements of table IV.MIL-DTL-83723F15TABLE IV. Coupling torque (type B only).Torque (pound inches)Shell size Maximum engagement anddisengagement Minimum disengagement8 8 210 12 212 14 214 20 416 24 418 28 420 32 622 36 724 44 73.5.10.2 Coupling torque (type T)(see 4.7.10). The torque required to couple and uncouple theconnectors, protective covers, and dummy storage receptacles shall be as specified in table V.3.5.11 Altitude immersion (firewall). When tested as specified in 4.7.11, the mated connector shallmeet a minimum insulation resistance of 1,000 megohms. Any evidence of dielectric breakdown orflashover shall be cause for rejection.3.5.12 Insert retention. When tested as specified in 4.7.12, assemblies shall retain their inserts in theirproper location in the shell. Evidence of cracking, breaking, separation from the shell or loosening of partsshall be cause for rejection.3.5.13 Salt spray (corrosion). When tested as specified in 4.7.13, unmated connectors and individualcontact samples shall show no exposure of base metal due to corrosion, which will adversely affectperformance.MIL-DTL-83723F16TABLE V. Coupling and uncoupling torque (type T).Uncoupling torquepound-inchesSeriesShell sizeMIL-DTL-83723Shell sizeMIL-C-5015 (Reference)Coupling torquepound-inches(Max) (Min) (Max)8 8S 12 8 2010 10S 14 8 2511 10SL 14 8 2512 12 16 10 2813 12S 16 10 2814 14 20 12 3515 14S 20 12 3516 16 24 16 4017 16S 24 16 4018 18 30 22 4520 20 40 28 5222 22 46 35 6524 24 55 40 7528 28 66 50 9032 32 78 60 10536 36 93 65 115II40 40 106 70 1258 8 11 5 1810 10 13 6 2312 12 14 6 2514 14 18 8 3216 16 21 9 3618 18 27 11 4020 20 31 13 4522 22 32 13 59III24 24 46 19 633.5.14 Contact resistance (hermetics only). When tested as specified in 4.7.14, contacts in the matedcondition shall meet the contact resistance requirements of table VI.TABLE VI. Contact resistance.Millivolt drop maximumClass Contact size Wire size Test ampsInitial After condition others20 20 5.0 105 16516 16 10.0 95 165H and Y12 12 17.0 95 165MIL-DTL-83723F173.5.15 Coupling pin strength (type B receptacles only). When tested as specified in 4.7.15, bayonetcoupling pins shall withstand a load of 50 ? 5 pounds without displacement or perceptible loosening of thecoupling pin.3.5.16 Insulation resistance.3.5.16.1 Insulation resistance at ambient temperature. When tested as specified in 4.7.16.1, theinsulation resistance between any pair of contacts and between any contact and the shell shall be greaterthan 5,000 megohms.3.5.16.2 Insulation resistance at elevated temperature. When tested as specified in 4.7.16.2, theinsulation resistance between any pair of contacts and between any contact and the shell shall be greaterthan 200 megohms.3.5.17 Dielectric withstanding voltage. When tested as specified in 4.7.17, connectors shall show noevidence of flashover or breakdown when subjected to the test voltages and altitudes of table VII.TABLE VII. Test voltages, ac rms, 60 Hz.Series IIAltitude Inst A D E B CSea level 1000 2000 2800 3500 4500 700050000 ft 400 600 675 750 825 97570000 ft 260 360 400 440 480 560110000 ft 200 200 200 200 200 200Series IIIAltitude Service rating I Service rating IISea level 1500 230050000 ft 500 75070000 ft 375 500110000 ft 200 2003.5.18 Durability. When tested as specified in 4.7.18, connectors shall show no damage detrimental tothe operation of the connector. Failure to complete this test because of mechanical malfunction of theconnector shall be cause for rejection.3.5.19 Random vibration. When tested as specified in 4.7.19, a current discontinuity of 1 microsecondor more, disengagement of the mated connectors, evidence of cracking, breaking, or loosening of partsshall be cause for rejection.3.5.20 Shock. When tested as specified in 4.7.20, a current discontinuity of 1 microsecond or more,disengagement of the mated connectors, evidence of cracking, breaking, or loosening of parts shall because for rejection.MIL-DTL-83723F183.5.21 Shell-to-shell conductivity (except class A). When tested as specified in 4.7.21, the probes shallnot puncture or otherwise damage the connector finish and the maximum measured potential drop acrossassemblies shall be as follows:a. Connectors with grounding fingers - 5 millivolts.b. Connectors without grounding fingers - 200 millivolts.3.5.22 Humidity. When tested as specified in 4.7.22, wired, mated connectors shall show nodeterioration and the insulation resistance shall be 100 megohms or greater.3.5.23 Shell spring finger forces. When tested as specified in 4.7.23, the forces necessary to engageand separate grounding plugs with receptacle shells shall be within the values specified in table VIII.TABLE VIII. Shell spring finger forces.Axial force in poundsShell sizeMaximum Minimum8 through 10 15 212 through 14 20 216 through 24 30 23.5.24 RFI shielding. When tested in accordance with 4.7.24, the RFI shielding capabilities of matedshells with spring fingers shall not be less than specified in table IX at the specified frequencies.TABLE IX. RFI shielding effectiveness.Frequency(MHz)Leakage attenuation (db)Frequency(MHz)Leakage attenuation (db)100 65 600 50200 60 800 45300 55 1000 45400 553.5.25 Ozone exposure. When tested as specified in 4.7.25, the connectors shall show no evidence ofcracking of dielectric material or other damage due to ozone exposure that will adversely affectperformance.3.5.26 Fluid immersion. Connectors shall mate properly after having been subjected to the testspecified in 4.7.26.3.5.27 Retention system fluid immersion. When tested as specified in 4.7.27, the insert assembliesshall meet the requirements of subsequent tests specified herein. Effects of the fluids on resilient sealingmembers shall not be a consideration of this test.MIL-DTL-83723F193.5.28 Contact walk-out. When tested as specified in 4.7.28, contacts shall not become dislodged fromtheir normal position.3.5.29 Installing and removal tool abuse. When tested as specified in 4.7.29, there shall be noevidence of damage to the contacts, the connector inserts or the contact retaining mechanism.3.5.30 External bending moment. When tested as specified in 4.7.30, using the applicable bendingmoment shown in table X connectors shall show no evidence of damage detrimental to their normaloperation nor shall there be any interruption of electrical continuity.TABLE X. External bending moment.SeriesShell sizeMil-DTL-83723 Shell size Mil-C-5015 (Reference)Bending moment(pound-inch)8 8S 4010 10S 9011 10SL 9012 12 18013 12S 18014 14 20015 14S 20016 16 25017 16S 25018 18 28020 20 30022 22 35024 24 38028 28 42032 32 50036 36 54040 40 58044 44 620II48 48 6608 8 5910 10 23012 12 29014 14 35016 16 41918 18 43320 20 45022 22 475III24 24 500MIL-DTL-83723F203.5.31 Pin contact stability (sizes 20, 16, and 12 crimp contacts). When tested in accordance with4.7.31, the total displacement of the contact tip end shall not exceed the amount shown in table XI.3.5.32 Temperature life with contact loading. When subjected to the test specified in 4.7.32, thecontacts shall maintain their specified locations as shown on figures 4 and 5 for series II, and on thespecification sheets for series III, as applicable, and there shall be no electrical discontinuity of 1microsecond or more.TABLE XI. Contact stability.Contact size Total displacement (inch)20 .03816 .06212 .0623.5.33 Firewall (classes K, N(firewall), and S). Mated connectors shall prevent the passing of a flamethrough the connector for a period of at least 20 minutes when tested in accordance with 4.7.33. Duringthis period, there shall be no flame from outgassing or other causes on the end of the connector protectedby the firewall. The current specified in table XII shall be applied for the first 5 minutes without a break incontinuity. During the next minute, the connectors shall not draw more than 2 amperes when a potentialof 125 volts rms, 60 Hz is applied between adjacent contacts and between contacts and the shell.TABLE XII. Firewall test currents.Contact size DC test current (amperes)20 7.516 2212 418 734 1350 2453.5.34 Contact plating adhesion (hermetics only). The adhesion of the gold plating on the contact shallbe tested as specified in 4.7.36. Flaking or peeling of the plating shall be considered a failure.3.5.35 Accessory thread strength. When tested as specified in 4.7.37, the accessory threads and aportion of the connector that accepts accessory hardware shall be capable of withstanding the torquesspecified in table XIII.3.5.36 Electrolytic erosion. When tested as specified in 4.7.38, pin contacts shall show no exposure tobase metal due to electrolytic erosion. Corrosion deposits shall not be considered as defects.3.5.37 Cavity to cavity leakage bonding integrity. When tested as specified in 4.7.39, there shall be noair leakage between contact cavities.MIL-DTL-83723F213.6 Interchangeability. The connector plugs, receptacles, contacts, and accessories supplied to thisspecification shall meet the requirements of the applicable specification sheet and shall be completelyinterchangeable with the components having the same Part or Identifying Number (PIN) but supplied by adifferent manufacturer.TABLE XIII. Accessory thread strength.Shell sizeMil-DTL-83723Shell sizeMil-DTL-5015(Reference)Minimum torque(pound-inch)8 8S 7510 10S 10012 12 14014 14 15016 16 15018 18 15020 20 17522 22 17524 24 1753.7 Marking.3.7.1 Connectors and accessories. Connectors and accessories shall be metal or ink stamped with themanufacturer's name or trademark, military PIN, and date code. Location shall be as shown on thespecification sheets (see 3.1). The characters shall be a minimum of .037 inch in height. Stamping shallbe in accordance with MIL-STD-1285 where space permits. Metal stamping shall be accomplished beforeplating. The following examples are illustrative of PIN identification:M83723/72 W 8 08 N Polarizing position Insert arrangement Shell size Class Specification sheet MIL SpecMIL-DTL-83723F223.7.2 Contact location identification. Contact locations shall be designated with identifiable charactersas indicated in MIL-STD-1554 and MIL-STD-1651, as applicable. All positions shall be identified on thefront and rear faces of the insert except where space limitations make this impracticable. Location ofcontact identifying characters shall be in close proximity to the holes but need not be placed exactly whereindicated on the standard. On outer row of contacts individual cavity identification may be deleted fromthose cavities where space precludes its application, or they may be located 120º either side the verticalcenter line above or beside the contact cavity provided the insert pattern can be easily determined andlegibility is not impaired.3.8 Workmanship. The connector shall be fabricated in a manner such that the criteria for appearance,fit and adherence to specified to tolerances are observed. Particular attention shall be given to neatnessand thoroughness of marking parts, plating, welding, soldering, riveting, staking, and bonding. Theconnectors shall be free from crazing, cracks, voids, pimples, chips, blisters, pinholes, sharp cuttingedges, burrs, and other defects that will adversely affect life, serviceability, or appearance.3.9 Change effectivity. The manufacturers are allowed one year for depletion of stock and thedistributors are allowed three years for depletion of stock.4. VERIFICATION4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, thecontractor is responsible for the performance of all inspection requirements (examinations and test) asspecified herein. Except as otherwise specified in the contract or order, the contractor may use his own orany other facilities suitable for the performance of the inspection requirements specified herein, unlessdisapproved by Government. The Government reserves the right to perform any of the inspections setforth in the specification where such inspections are deemed necessary to ensure supplies and servicesconform to prescribed requirements.4.1.1 Responsibility for compliance. All items shall meet all requirements of sections 3 and 5. Theinspection set forth in this specification shall become a part of the contractor's overall inspection system orquality program. The absence of any inspection requirements in the specification shall not relieve thecontractor of the responsibility of ensuring that all products or supplies subsmitted to the Government foracceptance comply with all requirements of contract. Sampling inspection, as part of manufacturingoperations, is an acceptable practice to ascertain conformance to requirements, however, this does notauthorize submission of known defective material, either indicated or actual, nor does it commit theGovernment to accept defective material.4.1.2 Test equipment and inspection facilities. Test and measuring equipment and inspection facilitiesof sufficient accuracy, quality, and quantity to permit performance of the required inspection shall beestablished and maintained by the contractor. The establishment and maintenance of a calibrationsystem to control the accuracy of the measuring and test equipment shall be in accordance withANSI/NCSL Z540-1.4.2 Classification of inspections. The inspection requirements specified herein are classified as follows:a. Qualification inspection (see 4.4).b. Quality conformance inspection (see 4.5).MIL-DTL-83723F234.3 Inspection conditions. Unless otherwise specified, all inspections shall be made in accordance withMIL-STD-1344.4.4 Qualification inspection. Qualification inspection shall be performed at a laboratory acceptable tothe Government (see 6.3) on sample units produced with equipment and procedures normally used inproduction.4.4.1 Sample size. For each series II or series III connector, the following test samples shall beprovided:a. Two mating pairs, classes A, G, K, N(Firewall), R, S, and W, straight plugs and wall mountingreceptacles of each shell size. All service ratings shall be represented. Each arrangement in agiven shell size shall be the densest contact arrangement for that particular service rating. Onesample of each shell size shall have pin contacts in the receptacle and socket contacts in theplug. The other sample shall have socket contacts in the receptacle and pin contacts in the plug. All samples shall be provided with strain relief cable clamps.b. Two class H or J, two class N or L and two class Y or P jam nut receptacles and class R or Gmating straight plugs, of each shell size. All service ratings shall be represented. Eacharrangement in a given shell size shall be densest contact arrangement for that particular servicerating.c. One class S straight plug and one class G and R straight plugs with grounding fingers andcounterpart wall mounting receptacle in at least three shell sizes; small, medium, and large. Specimens shall be less inserts and contacts, but with RFI backshells, if applicable.d. One wall mounting receptacle counterpart for each of the shell sizes selected for 4.4.1c. Specimens shall be less inserts and coupling pins (type B).e. One mating pair of connectors in each class for each fluid specified in any representative insertarrangement.f. One mating pair of connectors for each fluid specified in classes A, G, R, or W and classes K, N(firewall), or S straight plugs and wall mounting receptacles of various representative shell sizesand insert arrangement.g. Thirty-five pin contacts, classes H, J, N, L, P or Y of each size. Hermetic contacts shall be inshell/insert assemblies.h. Three mating pairs of class K, N, or S plugs and wall mounting receptacles of variousrepresentatives shell sizes.4.4.2 Preparation of samples.MIL-DTL-83723F244.4.2.1 Connector samples. Connector samples with crimp contacts under 4.4.1a, 4.4.1b, and 4.4.1eshall be terminated to a workable length of suitable wire. Half the samples shall use wires with outerdiameters approaching the maximum limit of table III, and the remainder with outer diameters approachingthe minimum limit of table III. Connector samples with solder contacts (classes H, N, or Y) shall have 3feet of suitable nominal gauge terminated thereto. Soldering shall be accomplished in accordance withMIL-HDBK-454.4.4.3 Inspection routine.a. Samples provided under 4.4.1a shall be divided into two numerically equal groups. Each groupshall contain roughly the same number of samples with the larger diameter wire as with thesmaller diameter wire. One group shall be subjected to the tests of group 1, table XIV, in thesequence indicated. The other group shall be subjected to the tests of group 2, table XIV in thesequence indicated.b. Samples provided under 4.4.1b shall be divided into two similar groups. One group shall besubjected to the tests of group 1, table XIV, in the sequence indicated. The other group shall besubjected to the tests of group 3, table XIV, in the sequence indicated.c. Samples provided under 4.4.1c shall be subjected to the tests of group 4, table XIV, in thesequence indicated.d. Samples provided under 4.4.1d shall serve as counterparts for the tests in group 4, table XIV.e. Samples provided under 4.4.1e shall be subjected to the tests of group 5 table XIV, in thesequence indicated.f. Samples provided under 4.4.1f shall be subjected to the tests of group 6, table XIV, in thesequence indicated.g. Samples provided under 4.4.1g shall be divided and subjected to the tests of group 7, table XIV,in the quantities indicated therein. No sample group shall be subjected to more than one test.h. Samples provided under 4.4.1h shall be subjected to the tests of group 8, table XIV, in thesequence indicated.4.4.4 Failures. Any failure shall be cause for refusal to grant qualification approval.MIL-DTL-83723F25TABLE XIV. Qualification and group C.Test Requirement paragraph Test paragraphGroup 1 (all classes)Visual and mechanical examinationCavity to cavity leakage bonding integrityMaintenance aging 1/Thermal shock (hermetics only)Temperature cycling 1/Air leakage (hermetics only)Coupling torqueAltitude immersion 1/Insert retentionSalt spray (corrosion)Coupling torque (to mate)Contact resistance (hermetic only)Uncoupling torque (type T)Coupling pin strength (type B receptacles only)External bending momentElectrolytic erosionVisual and mechanical examination3.5.13.5.373.5.43.5.73.5.83.5.93.5.103.5.113.5.123.5.133.5.103.5.143.5.10.23.5.153.5.303.5.363.5.14.7.14.7.394.7.44.7.74.7.84.7.94.7.104.7.114.7.124.7.134.7.104.7.144.7.104.7.154.7.304.7.384.7.1Group 2 (classes A, G, K, N(Firewall), R, S, and W)Visual and mechanical examinationGauge locationGauge retentionMaintenance agingContact retentionAltitudes – low temperatureTemperature cycling 1/Coupling torqueInsulation resistance at elevated temperatureDielectric withstanding voltage at sea levelDielectric withstanding voltage at altitude 2/DurabilityRandom vibration 2/ShockShell to shell conductivity (except class A)HumidityContact retentionAccessory thread strengthVisual and mechanical examination3.5.13.5.23.5.33.5.43.5.53.5.63.5.83.5.103.5.16.23.5.173.5.173.5.183.5.193.5.203.5.213.5.223.5.53.5.353.5.14.7.14.7.24.7.34.7.44.7.54.7.64.7.84.7.104.7.16.24.7.17.14.7.17.24.7.184.7.194.7.204.7.214.7.224.7.54.7.374.7.1 See footnotes at end of table.MIL-DTL-83723F26TABLE XIV. Qualification and group C - Continued.Test Requirement paragraph Test paragraphGroup 3 (hermetic receptacles)Visual and mechanical examinationContact resistanceThermal shockAir leakageDurabilityCoupling torqueRandom vibration 2/ShockInsert retentionInsulation resistance at ambient temperatureHumidityContact resistanceVisual and mechanical examination3.5.13.5.143.5.73.5.93.5.183.5.103.5.193.5.203.5.123.5.16.13.5.223.5.143.5.14.7.14.7.144.7.74.7.94.7.184.7.104.7.194.7.204.7.124.7.16.14.7.224.7.144.7.1Group 4 (shells with spring fingers)Visual and mechanical examinationShell spring finger forcesShell-to-shell conductivityRFI ShieldingVisual and mechanical examination3.5.13.5.233.5.213.5.243.5.14.7.14.7.234.7.214.7.244.7.1Group 5 (dielectrics, all classes)Visual and mechanical examinationTemperature life with contact loading 1/Ozone exposureInsulation resistance at ambient temperatureDielectric withstanding voltage at sea levelFluid immersionInsert retentionVisual and mechanical examination3.5.13.5.323.5.253.5.16.13.5.173.5.263.5.123.5.14.7.14.7.324.7.254.7.16.14.7.17.14.7.264.7.124.7.1 See footnotes at end of table.MIL-DTL-83723F27TABLE XIV. Qualification and group C - Continued.Test Requirement paragraph Test paragraphGroup 6 (retention system)Visual and mechanical examinationContact walkoutInstalling and removal tool abusePin contact stability (sizes 20, 16 and 12 crimpcontacts)Retention system fluid immersionContact retentionVisual and mechanical examination3.5.13.5.283.5.293.5.313.5.273.5.53.5.14.7.14.7.284.7.294.7.314.7.274.7.54.7.1Group 7 (unwired hermetic contacts)Surface roughness 3/Plating thickness 3/Plating adhesion 3/3.4.5.43.3.3.23.5.344.7.344.7.354.7.36Group 8 (firewall, class K, N or S)Firewall 3.5.33 4.7.331/ Not applicable to hermetics.2/ Qualification only.3/ Sample size – 5 pieces of each contact size. No failures permitted. 4.4.5 Retention of qualification. To retain qualification, the contractor shall forward a report at leastevery 12 months to the qualifying activity. The qualifying activity shall establish the initial reporting data.The report shall consist of:a. Connectors:1. A summary of the results of the tests performed for inspection of product for delivery (groups Aand B) indicating as a minimum the number of lots that have passed and the number that havefailed. The results of tests of all reworked lots shall be identified and accounted for.2. A summary of the results of tests performed for qualification verification inspection including thenumber and mode of failures. The summary shall include results of all group C inspection testsperformed and completed during the reporting period. If the summary of the test resultsindicates nonconformance with specification requirements, and corrective action acceptable tothe qualifying activity has not been taken, action may be taken to remove the failing product fromthe qualified products list.MIL-DTL-83723F28b. Protective caps and dummy stowage receptacles.1. A summary of the results of the tests performed for inspection of product for delivery (groups Aand B) indicating as a minimum the number of lots that have passed and the number that havefailed. The results of tests of all reworked lots shall be identified and accounted for.Failure to submit the report within 30 days after the end of each reporting period may result in the loss ofqualification for the product. In addition to the periodic submission of inspection data, the contractor shallimmediately notify the qualifying activity at any time during the reporting period that the inspection dataindicates failure of the qualified product to meet the requirements of the specification.In the event that no production occurred during the reporting period, a report shall be submitted certifyingthat the company still has the capabilities and facilities necessary to produce the item. If during twoconsecutive reporting periods there has been no production, the manufacturer may be required, at thediscretion of the qualifying activity, to submit the products (a representative product of each series, type,and class, etc.) to testing in accordance with the qualification inspection requirements.4.4.6 Qualification of additional connectors. For connectors which differ only in minor details from thosewhich have been qualified, the contractor's test report need only provide inspection and test datanecessary to validate the difference with information on identical features for which no inspection or testwas performed. Manufacturers who qualify class R connectors and pass the requirements for class Aconnectors shall be granted qualification for all class A connectors which have the same insertarrangements and shell style as class R connectors. Manufacturers who qualify class S receptacles andplugs shall be granted qualification for all class N connectors which have the same insert arrangementsand shell style provided additional requirements affecting plating are met. These requirements shall bedetermined by the qualifying activity.4.4.7 Qualification of contacts. Contacts supplied with MIL-DTL-83723 connectors must be qualified forlisting on the QPL for MIL-C-39029, except hermetics.4.5 Quality conformance inspection.4.5.1 Inspection of product for delivery. Inspection of product for delivery shall consist of groups A andB inspections.4.5.1.1 Inspection lot. An inspection lot shall consist of all connectors covered by the samespecification sheets, produced under essentially the same conditions and offered for inspection at onetime. In-process controls, unrelated to lot sizes of finished connectors, may be used, provided aninspection method equivalent to the actual testing level is maintained.4.5.2 Group A inspection. Connectors shall be subjected to the individual tests shown in tables XV. Protective caps and dummy stowage receptacles shall be subjected to the individual tests shown in tablesXVI. For group A inspection, the documentation and standard test conditions of MIL-STD-1344 do notapply.MIL-DTL-83723F29TABLE XV. Group A inspection (connectors).Test Requirement paragraph Test paragraphVisual examination 1/Insulation resistance (ambient temperature) 1/ 2/ 3/Dielectric withstanding voltage (sea level) (except hermetics, style P) 1/ 3/Air leakage (hermetics only) 1/ 3/Coupling torque 3/3.5.16.13.5.173.5.93.5.104.5.2.14.7.16.14.7.17.14.7.94.7.101/ One hundred percent inspection.2/ Test between two adjacent contacts and between two peripheral contacts and the shell.3/ The contractor may use in-process controls for this requirement.TABLE XVI. Group A inspection, (Protective caps and dummy stowage receptacles).Test Requirement paragraph Test paragraphVisual examination 1/Coupling torque 1/ 2/ 3.5.104.5.2.14.7.101/ One hundred percent inspection.2/ The contractor may use in-process controls for this requirement.4.5.2.1 Visual examination. Each connector shall be visually examined for completeness,workmanship, and identification requirements. Attention shall be given to those assemblies that require agasket to determine the condition of that gasket. Gaskets missing, twisted, buckled, kinked, or damagedin any way shall be cause for rejection.4.5.3 Group B inspection. Group B inspection shall consist of the examinations and tests specified intable XVIIa, in the order shown, and shall be made on sample units which have been subjected to, andhave passed the group A inspection. For group B inspection, the documentation and standard testconditions of MIL-STD-1344 does not apply.4.5.3.1 Sampling plan. A sample size shall be randomly selected in accordance with table XVIIb. Ifone or more defects are found, the lot shall be rescreened and defects removed. If one or more defectsare found, a new sample shall be randomly selected from table XVIIb. If one or more defects are found,the lot shall not be supplied to this specification.MIL-DTL-83723F30TABLE XVIIa. Group B inspection (connectors).Test Requirement paragraph Test paragraphVisual and mechanical examination 1/Shell spring finger forces (plugs with spring fingers only) 1/ 2/3.5.13.5.234.7.14.7.231/ The contractor may use in-process controls for this requirement.2/ Test 5 pieces - No failures permitted.TABLE XVIIb. Sampling plan for group B.Lot size Sample size1 to 13 100 percent14 to 150 13 units151 to 280 20 units281 to 500 29 units501 to 1200 34 units1200 to 3200 42 units4.5.3.2 Rejected lots. If an inspection lot is rejected, the contractor may rework it to correct the defects,or screen out the defective units and resubmit for reinspection. Resubmitted lots shall be inspected usingtightened inspection. Such lots shall be separate from new lots and shall be clearly identified asreinspected lots.4.5.3.3 Disposition of sample units. Sample units which have passed all of the group B inspection maybe delivered on the contract or purchase order if the lot is accepted and sample units are still withinspecified tolerances.4.5.4 Periodic inspection. Periodic inspection shall consist of group C inspection. Except where theresults of these inspections show noncompliance with the applicable requirements (see 4.5.4.1.4), deliveryof products which have passed groups A and B inspections shall not be delayed pending the results ofthese periodic inspections.4.5.4.1 Group C inspection. Group C inspection shall be performed every 24 months, which must beaccomplished within this period after notification of qualification. Samples submitted shall have passedgroups A and B inspections.4.5.4.1.1 Twenty-four-month inspection. During the 24-month inspections, mating connector sample unitsshall be selected and tested in accordance with a, b, and c, as applicable. Twenty-four-month inspectionfor class A connector need not be performed provided class R connectors are inspected.MIL-DTL-83723F31a. Two mating classes A, K, N, R, S, and W plugs and receptacles in each type shall be provided.These samples shall include at least three shell sizes, small, medium, and large, manufacturedduring the period. One mating sample of each configuration shall be fully wired with the maximumdiameter wire of table II and subjected to the applicable tests of table XIV, group 1. The remainingsamples shall be fully wired with the minimum diameter wire of table III and subjected to theapplicable tests of table XIV, group 2.b. Two mating class G plugs and classes H or J, N (hermetic) or L, and P or Y receptacles in eachtype shall be provided. These samples shall include at least three shell sizes, small, medium, andlarge, manufactured during the period. Half the plugs shall be wired with maximum diameter wireper table II and the other half with minimum wire per table II. The receptacles shall be wired withnominal gauge wire. One mating pair of each shell size shall be subjected to the tests of table XIV,group 1, and the remainder to the tests of table XIV, group 3.c. Sufficient quantities of classes H or J, N or L, and P or Y shall be provided to furnish a minimum of15 pin contacts of each mating end size. These samples shall be subjected to the tests of tableXIV, group 7.d. Temperature life (see 4.7.32) - On one mating pair of connectors of any representative size andarrangement. The time period shall be 250 hours.4.5.4.1.2 Failures. If any sample units fail to pass group C inspection, the sample shall be consideredto have failed.4.5.4.1.3 Disposition of sample units. Sample units which have been subjected to group C inspectionshall not be delivered on the contract or purchase order.4.5.4.1.4 Noncompliance. If a sample fails to pass group C inspection, the contractor shall takecorrective action on the materials or processes, or both, as warranted, and on all units of product whichcan be corrected and which were manufactured under essentially the same conditions, with essentially thesame materials, processes, etc., and which are considered subject to the same failure. Acceptance of theproduct (related lots) shall be discontinued until corrective action, acceptable to the Government, hasbeen taken. After the corrective action has been taken, group C inspection shall be repeated onadditional sample units (all inspections, or the inspection which the original sample failed, at the option ofthe Government). Groups A and B inspections may be reinstituted; however, final acceptance shall bewithheld until the group C reinspection has shown that corrective action was successful. In the event offailure after reinspection, information concerning the failure and corrective action taken shall be furnishedto the cognizant inspection activity and the qualifying activity.4.6 Inspection of packaging. The sampling and inspection of the preservation, packing, and containermarking shall be in accordance with the requirements of MIL-C-55330.4.7 Methods of examination and test.4.7.1 Visual and mechanical examination.MIL-DTL-83723F324.7.1.1 Connectors, protective caps and dummy stowage receptacles. The connectors, accessories,and piece parts shall be visually and mechanically examined to ensure conformance with the specificationand the applicable military standards (see 3.1, 3.3, 3.4, 3.6, 3.7, 3.8). The contractor may use in-processcontrols to satisfy these requirements.4.7.1.2 Contacts (hermetics only). The contacts shall be visually examined for mechanical defects (see3.1, 3.3, 3.4, 3.6, and 3.8). The contacts shall be inspected through a device having a magnificationpower of approximately three diameters. The contractor may use in-process controls to satisfy theserequirements.4.7.2 Gauge location (see 3.5.2). Applicable test gauges conforming to the requirements specified in3.5.2 shall be installed in three randomly selected cavities in each connector, with the necessary rearhardware removed. With the test gauges fully seated back against the contact retention device, the axiallocation of the front end of the gauges shall be measured relative to the reference point indicated onfigures 4 and 5, as applicable.4.7.3 Gauge retention (see 3.5.3). Applicable test gauges shall be installed in three randomly selectedcavities in each connector, with the accessory rear hardware removed. The axial load specified in tableXVIII shall be applied to individual test gauges in both directions. The load shall be applied at a rate of 1pound per second until the specified load has been reached. Gauge displacement shall be measured withrespect to the connector shell after an initial load of 2 pounds has been applied to assure that all slack hasbeen taken up. The measured displacement shall meet the requirements of 3.5.3.TABLE XVIII. Axial load for contact retention test (all except hermetics).Contact size Axial load +3, -0 lbs20 2016 2512 308 504 600 754.7.4 Maintenance aging (except hermetics) (see 3.5.4). Connectors shall be tested in accordance withmethod 2002 of MIL-STD-1344. After installing all contacts, each connector shall be mated and unmated10 times. Measurements shall be made after the first and tenth cycle. A minimum of 20 percent, but notless than three of the contacts in each connector shall then be removed and reinserted 10 times with theaid of appropriate tools. A simulated socket contact conforming to figure 7 shall be used in place of threeof the socket contacts.4.7.5 Contact retention (see 3.5.5).4.7.5.1 Contact retention (procedure I). The contact retention shall be tested as specified in method2007 of MIL-STD-1344. The following details and exceptions shall apply:MIL-DTL-83723F33a. Number of samples - The test shall be performed on 20 percent of the contact complement, butnot less than three contacts in each connector half.b. Applied axial load - Preload to 2 pounds maximum. Apply load as specified in table XVIII.c. Special requirements - Where the test sequence requires maintenance aging prior to contactretention, the contacts which were subjected to maintenance aging shall also be selected forcontact retention.d. Axial direction - The applicable forces shall be applied along the longitudinal axis of individualcontacts in the direction tending to the contacts to the rear.e. Only the contacts to be tested need be installed in the connector.4.7.5.2 Contact retention (procedure II). The contact retention shall be tested as specified in method2007 of MIL-STD-1344. Unwired contacts maybe installed in the cavities to be tested. The followingdetails and exceptions shall apply:a. Number of samples - Same as 4.7.5.1a.b. Applied axial load - Same as 4.7.5.1b.c. Special requirements - Same as 4.7.5.1c.d. Axial direction - Same as 4.7.5.1d, except the direction shall tend to displace the contacts to thefront.e. Only the contacts to be tested need to be installed in the connector.4.7.6 Altitude-low temperature (see 3.5.6). Wired, mated, assembled connectors with strain reliefclamps installed shall be conditioned in a dry oven at a temperature of 50ºC +5ºC for a minimum of 8hours.a. Reduce the chamber internal temperature to -50ºC +0ºC, -4ºC and maintain until the connectorstabilizes.b. Reduce the chamber internal pressure to simulate an altitude of 80,000 feet (21 torr).c. Maintain the above connector temperature and chamber pressure for 1hour minimum.d. Apply 625 V rms 60 Hz between the connector shell and all contacts for 1 minute, minimum. Indication of disruptive shall require reapplication and maintenance of the test voltage for 60seconds.e. With the test voltage removed, increase the chamber internal pressure and temperature tostandard ambient conditions and allow the connector to stabilize.f. With the connector mated, subject the connector to the insulation resistance test of 4.7.16.1 andthe dielectric withstanding voltage test of 4.7.17.1.4.7.7 Thermal shock (hermetics only) (see 3.5.7). Unmated receptacles shall be subjected to 10 cyclesof thermal shock in the following manner:a. The receptacle shall be suspended for 10 +1,-0 minutes in the center of a cold water bath with avolume of approximately 1 cubic foot. No dimension of the bath shall be less than 10 inches. Thewater temperature shall not exceed 4ºC (39ºF).b. The receptacle shall be suspended for 10 +1, -0 minutes in the center of a hot water bath with avolume of approximately 1 cubic foot. No dimension of the bath shall be less than 10 inches. Thewater temperature shall not be less than 90ºC (201ºF).MIL-DTL-83723F34The time of transfer from one bath to the other shall not exceed 5 seconds. At the end of the tenth cycle,the receptacle shall have the excess moisture shaken off and then be dried in a forced air oven at 66ºC? 5ºC for 15 ?1 minutes.4.7.8 Temperature cycling (except hermetics) (see 3.5.8). Mated connectors shall be subjected to thetemperature cycling of MIL-STD-1344 method 1003, test condition A except that steps 2 and 4 shall be of2 minutes maximum duration. The temperature of step 1 shall be -65ºC +0ºC, -5ºC and the temperatureof step 3 shall be 175ºC +5ºC, -0ºC for class W, and 200ºC +5ºC, -0ºC for classes A, G, K, R, S, and N.4.7.9 Air leakage (hermetics only) (see 3.5.9). The connector shall be subjected to method 1008 ofMIL-STD-1344. Pressure differential across the connector shall be one atmosphere.4.7.10. Coupling torque (series III, type T selflocking and type B plugs only) (see 3.5.10). Forqualification testing, mating halves shall be coupled and uncoupled. The forces or torques which must beapplied to facilitate full coupling and uncoupling shall be measured and recorded. For qualityconformance testing, suitable gauges may be used instead of the appropriate counterparts.4.7.11 Altitude immersion (except hermetics) (see 3.5.11). Mated connectors shall be tested inaccordance with method 1004 of MIL-STD-1344. The following details shall apply:a. All wire ends shall be located within the chamber and exposed to the chamber atmosphere, but notsubmerged or sealed.b. At the end of the third cycle while the mated connectors are still submerged in the solution, theinsulation resistance shall be measured as specified in 4.7.16.1. and the dielectric withstandingvoltage test shall be performed as specified in 4.7.17.1.c. Paragraphs 4.4 and 5e of method 1004 shall not apply.4.7.12 Insert retention (see 3.5.12). Connectors shall be tested in accordance with method 2010 ofMIL-STD-1344. Samples shall be wired. The load to be applied shall be as follows:Shell size Test pressures lbf/in28 through 12 15014 through 18 10020 through 22 7524 through 28 6032 through 40 4544 through 48 304.7.13 Salt spray (corrosion) (see 3.5.13).4.7.13.1 Standard test (all classes except W). Unmated connectors and individual contact samplesshall be tested in accordance with method 1001 of MIL-STD-1344. The following details and exceptionsshall apply:MIL-DTL-83723F35a. Test condition letter - B.b. The samples shall not be mounted but shall be suspended from the top using waxed twine or string, glass rods, or glass cord.4.7.13.2 Dynamic test (class W only). The wired, assembled plugs and receptacles shall be mated andunmated 50 cycles at a rate of 300 cycles per hour maximum. The mating and unmating shall beaccomplished so that the plug and receptacle are completely separated during each cycle. Theconnectors shall then be subjected to the salt spray test in accordance with method 1001 of MIL-STD-1344. The following details and exceptions shall apply:a. The connectors shall be tested for 452 hours mated followed by 48 hours unmated.b. The connectors shall not be mounted, but shall be suspended from the top of the chamber usingwaxed twine or string, glass rods, or glass cord.c. Wire ends must be protected to prevent salt migration. After the salt spray exposure, the remainingnumber of durability cycles specified in 4.7.18 shall be completed.4.7.14. Contact resistance (hermetics only) (see 3.5.14). The contact resistance of mated contactsshall be measured in accordance with method 3004 of MIL-STD-1344.4.7.15 Coupling pin strength (type B receptacles only) (see 3.5.15). One coupling pin in eachreceptacle shall be subjected to a 50 +5,-0 pounds load applied to the swaged end along the major axis ofthe coupling pins on swaged pins, and perpendicular to the pin centerline on the exposed portion ofwelded or brazed pins. A steel test fixture contoured to the shape of the coupling pin shall be used forapplication of the load on the welded or brazed pins. Socket inserts may be removed from receptacleswhen necessary to admit the test tip.4.7.16 Insulation resistance (see 3.5.16).4.7.16.1 Insulation resistance at ambient temperature. Unmated connectors shall be tested asspecified in method 3003 of MIL-STD-1344. The following details and exceptions shall apply:a. For lot quality conformance testing, where it is undesirable to install actual contacts in connectors,simulated contacts and special techniques may be used in performing this test.b. The tolerance on the applied voltage shall be ? 10 percent.4.7.16.2 Insulation resistance at elevated temperature (see 3.5.16.2). Unmated connectors shall betested as specified in method 3003 of MIL-STD-1344. The following details and exceptions shall apply:a. The tolerance on the applied voltage shall be ? 10 percent.b. Connectors shall be exposed to a temperature of 150ºC +5ºC, -0ºC for class and H, 175ºC +5ºC,-0ºC for class W, and 200ºC +5ºC, -0ºC for all other classes for 30 minutes. Measurement shall bemade while the connectors are still in the chamber at the specified temperature.4.7.17 Dielectric withstanding voltage (see 3.5.17).4.7.17.1 Dielectric withstanding voltage (sea level). Unmated connectors shall be tested on accordancewith method 3001 of MIL-STD-1344 with the following details and exceptions:MIL-DTL-83723F36a. The magnitude of the test voltage shall be as specified in table VII.b. The test voltage shall be applied between adjacent pairs of contacts and between peripheralcontacts and the shell. Fifty percent of the contacts shall be tested, but not less than sixapplications made, unless the number of contacts is three or less in which case all must be tested.c. For quality conformance testing, simulated contacts and special techniques may be used inperforming this test.4.7.17.2 Dielectric withstanding voltage (altitude). Mated connectors and unmated connector halveswith pin contacts shall be tested in accordance with method 3001 of MIL-STD-1344 with the followingdetails and exceptions:a. The magnitude of the test voltage shall be as specified in table VII.b. The test voltage shall be applied between adjacent pairs of contacts and between peripheralcontacts and the shell. Fifty percent of the contacts shall be tested, but not less than sixapplications made, unless the number of contacts is three or less in which case all must be tested.c. The leads of all test circuits shall be brought out through the walls of the chamber. There shall beno wire splices inside the chamber. The wire ends of all leads shall be unsealed.d. Only the engaging faces of hermetic connectors shall be subjected to the high altitude. The rearfaces shall be suitably protected.e. The chamber shall be evacuated to each of the specified altitude pressure equivalents listedbelow: Altitude – ft Equivalent Pressure - torr 50,000 87.3 70,000 33.6 110,000 5.34.7.18 Durability (see 3.5.18). Connector halves shall be mated and unmated 250 times for assemblieswith grounding fingers, for type "T"; and 500 times for type "B" connectors without grounding fingers at arate not exceeding 300 cycles per hour. The test may be performed by hand or by mechanical means, butthe coupling ring shall be operated as in normal service.4.7.19 Random vibration (see 3.5.19). Wired, mated connectors shall be subjected to the test specifiedin method 2005 of MIL-STD-1344. The connector shall be mounted on the table by normal means. Thefollowing details shall apply:a. Test condition VI - letter "J".b. The duration of test shall be 8 hours in the longitudinal direction and 8 hours in the perpendiculardirection.c. Means may be provided to relieve hermetic solder terminations, and jumper wires may be usedbetween contacts.4.7.20 Shock (see 3.5.20). Connectors shall be subjected to the test specified in method 2004, testcondition D of MIL-STD-1344. The following details shall apply:a. The pulse shall be an approximate half sine wave of 300 G ? 15 percent magnitude with a duration of3 ? 1 milliseconds.MIL-DTL-83723F37b. The wire bundle shall be clamped to fixed points at least 8 inches (203.2 mm) from the rear of the connector.4.7.21 Shell-to-shell conductivity (except class A) (see 3.5.21). Mated connectors shall be subjected tothe test specified in method 3007 of MIL-STD-1344.4.7.22 Humidity (see 3.5.22). Wired, mated connectors, shall be subjected to the humidity testspecified in method 1002 of MIL-STD-1344. The following details and exceptions shall apply:a. Test condition letter - Type II.b. The mated connectors shall be mounted in a vertical position.c. Step 7a shall be performed during last 5 cycles.d. After a minimum of 3 hours of step 7a of final cycle and while the connectors are still subjected tohigh humidity, the insulation resistance shall be measured when the chamber temperature reaches20ºC ? 5ºC and condensation is on the connectors.4.7.23 Shell spring finger forces (see 3.5.23). Plugs without coupling rings shall be completely matedand unmated with receptacles without inserts. On the initial mating and unmating, the forces necessary toengage and separate shall be within the values specified in table VIII.4.7.24 RFI shielding (see 3.5.24). The RFI shielding effectiveness of mated connectors with RFIbackshells shall be measured in a triaxial radio frequency leakage fixture. The RFI leakage from theconductor inside the connector in the inner coaxial line into the outer coaxial line shall be measured at thefrequencies specified in table IX within a frequency accuracy of ? 5 percent. The level of detected signalpower shall be indicated by a tunable radio frequency field intensity meter isolated from the test circuit by a3 to 10 dB pad. Care shall be taken to ensure that the signal is a result of RFI leakage from within themated connector and not due to a faulty termination inside the fixture. All terminations inside the fixture,whether to the RFI backshells or between internal conductors, shall have a leakage at least 10 dB lessthan the test requirement. The test arrangement shall be as shown on figures 8 and 9. The signal sourceshall be set to the desired frequency. The signal shall be fed through a 3 to 10 dB isolation pad to aparallel circuit consisting of a coaxial switch (DPDT) so connected that the signal can be manually orelectronically fed alternately to the fixture and to a variable 100 dB reference attenuator. The attenuatorshall be adjustable in 1 dB steps and calibrated to ? 3 dB.a. The inserts may be removed from the connectors under test or the contacts removed and a holedrilled through the inserts to accommodate a center conductor of suitable geometry to provide agood 50 ohm impedance match with the ID of the mated connector shells and RFI backshells. Tapered transitions may be used to provide a means of changing diameters without introducingsignificant discontinuities in the line. The maximum VSWR in the inner coaxial line shall be 1.5. The outer shell of the test fixture shall be so constructed as to provide a good 50 ohm impedancematch with the OD of the mated connector shells, coupling ring and RFI backshells. Themaximum VSWR of the outer coaxial line shall be 1.5.b. A sliding circumferential short shall be positioned behind the connector on the signal-input end ofthe fixture to provide for tuning the outer coaxial line for maximum output at each test frequency. The allowable travel of this short shall be greater than 1/2 wave length at the lowest test frequency,for example 1.5 meters minimum for 100 MHz. The inner coaxial line shall be terminated in a fixed50-ohm load impedance behind the connector at the output end of the fixture.MIL-DTL-83723F38c. The connectors used to couple together the various elements of the test system shall be of a lowleakage type which have a nominal impedance of 50 ohms, a VSWR of less than 1.5, and aminimum leakage attenuation of 100 dB. The output impedance of the signal source and the inputimpedance of the detector shall be nominally 50 ohms with a maximum VSWR of 1.5. The inputand output VSWR of the standard attenuator shall be less than 1.5 in the 20 to 100 dB range.d. The relative signal level in the variable attenuator shall be equaled to that through the leakagefixture by adjusting the attenuator. The signal loss in the fixture can then be read from the settingon the variable attenuator.4.7.25 Ozone exposure (see 3.5.25). The connectors shall be subjected to the test specified in method1007.1 of MIL-STD-1344.4.7.26 Fluid immersion (see 3.5.26). Connector samples shall be subjected to the test specified inmethod 1016 of MIL-STD-1344 (one sample per fluid). Following the fluid immersion cycles, theconnectors shall be tested for coupling torque as specified in 4.7.10 and dielectric withstanding voltage atsea level as specified in 4.7.17.1 within three hours.4.7.27 Retention system fluid immersion (see 3.5.27). Connectors shall be unmated and contacts shallbe removed. Connectors shall be immersed in the fluids of 4.7.26 (one sample per fluid) for twenty hoursat room temperature. After removal, excess fluid shall be allowed to drain from the connectors forfour hours and the contacts shall be reinstalled. The connectors shall then be subjected to the contactretention test of 4.7.5.4.7.28 Contact walk-out (see 3.5.28). Two contacts in each plug and receptacle shall be tested. Thecontacts shall be crimped to stranded steel cable of an appropriate size and installed in the connector. The unmated connector shall be mounted in a test fixture as shown on figure 10. A three pound load shallbe applied to the cable. One 360º rotation of the fixture with the connector mounted shall constitute onecycle. The connector shall be subjected to 100 cycles at a rate of 10 to 20 cycles per minute. Contactcavities used in this test shall be excluded from further testing.4.7.29 Installing and removal tool abuse (see 3.5.29). Five contact cavities in each connector shall besubjected to each of the tests in 4.7.29.1 through 4.7.29.4. Different contact cavities shall be used foreach test. Should a tool become damaged during any of the testing it shall be replaced. Failure of a toolshall not constitute a test failure. Contact cavities used in this test shall not be subject to further testing.4.7.29.1 Removal tool rotation. The applicable contact removal tool shall be inserted as if to remove acontact and an axial load of three pounds shall be applied. With the force applied, the tool shall be rotated180º and then removed, also removing the contact. The contact shall be reinserted. These steps shall berepeated three times on each of the five contacts selected.4.7.29.2 Installing tool rotation. The contact shall first be removed. With the applicable contactinstalling tool, the contact shall be reinstalled and an axial load of three pounds applied to the tool. Withthe force applied, the tool shall be rotated 180º and then removed. These steps shall be repeated threetimes on each of the five contacts selected.4.7.29.3 Installing tool thrust. The contact shall first be removed. With the applicable contact installingtool, the contact shall be reinstalled and an axial load of 10 pounds applied to the tool. These steps shallbe performed only once on each of the five contacts selected. A new tool shall be used for each contact.MIL-DTL-83723F394.7.29.4 Removal tool thrust. The applicable contact removal tool shall be inserted as if to remove thecontact and an axial load of 10 pounds shall be applied to the tool. The tool shall then be removed, alsoremoving the contact. These steps shall be performed only once on each of the five contacts selected. Anew tool shall be used for each contact.4.7.30 External bending moment (see 3.5.30). The receptacle connector shall be mounted as innormal service to a rigid panel. Before mating the plug connector to the receptacle, an adapter or testtorque arm shall be attached as shown on figure 11. After mating the plug and receptacle connectors, thedistances "L" from the point of load application and "P" to the mounting panel shall be determined. Theload to be applied at point "P" shall then be determined as the bending moment listed in table X divided bythe lever arm "L". This load shall be applied at a rate of approximately 10 pounds per second until therequired load is achieved. The load so applied shall be held for a period of one minute after which theload shall be released. Continuity of the contacts shall be monitored during the test. The test circuit usedto monitor this test shall be capable of detecting any discontinuity of one microsecond or greater.4.7.31 Pin contact stability (see 3.5.31). The unmated connectors shall have 10 percent (but not lessthan one) of their pin contacts subjected to this test. Gauge pins conforming dimensionally to theapplicable military standard for the contacts shall be used. The connector shall be held in a holdingdevice. A force of three pounds shall be applied to the exposed rod as shown on figure 12. The rate ofload application shall not exceed one inch per minute. The total pin tip displacement shall be measuredas shown on figure 12. Contact cavities use in this test shall be excluded from further testing.4.7.32 Temperature life with contact loading (see 3.5.32). Connectors with removable contacts shallhave one mating pair of contacts removed from an untested contact cavity and replaced with contactscrimped or otherwise attached to steel cable or steel-cored copper wire (copperweld, or equivalent) of anappropriate size. The axial location of these contacts shall be measured for conformance to theapplicable dimensions on figures 4 and 5, or the applicable specification sheets, as applicable, with a loadof 2 pounds approximately applied to seat the contact back against the retention device. The connectorshall then be mounted in a fixture as shown on figure 14. A weight equal to 50 percent of the axial loadspecified in table XVIII for the applicable contact size shall be suspended freely from each steel wire. Acurrent of 100 milliamperes maximum, shall be applied to the test contacts and a suitable instrument shallbe used to monitor the circuit for discontinuities in excess of one microsecond. The mounted connectorshall then be exposed to 175ºC +5ºC, -0ºC for class W, 200ºC +5ºC, -0ºC for all other classes (excepthermetics) for a period of 1,000 hours minimum. After the connectors return to ambient temperature, theyshall be unmated and the contact locations remeasured with approximately two pounds axial load appliedto seat the contact back against the retention device.4.7.33 Firewall (classes K, N (firewall), and S connectors) (see 3.5.33). The mated, torqued, and wiredconnectors shall be subjected to the test specified in method 1009 of MIL-STD-1344. The following detailand exception shall apply:Wire bundles to be clamped to fixed points at least 8 inches (203.2 mm) behind the connector.4.7.34 Surface roughness (hermetics only) (see 3.4.5.4). The surface roughness of samples shall bemeasured with a suitable instrument.4.7.35 Contact plating thickness (hermetic) (see 3.3.3.2). Contact plating thickness shall be measuredby any method which will give results within ? 10 percent of the true thickness (see figure 1).MIL-DTL-83723F404.7.36 Plating adhesion (hermetics only) (see 3.5.34). Sizes 16 and 20 contacts shall be bentrepeatedly through an angle of 90 degrees on a diameter equal to the outside diameter of the specimenuntil fracture of the basic metal occurs. Suitable equipment shall be used to cause the fracture to occur inthe area where plating adhesion is to be determined, as indicated on figure 1. A sharp pointed tool shallbe used to determine if any area of the coating can be separated from the basic metal. The plating areashall then be examined at a magnification of four diameters. The contact may be sectioned longitudinallyfor this test when necessary. Contact sizes 0, 4, 8, and 12 shall be maintained at their temperature limit(200ºC ? 3ºC) for a minimum of 30 minutes and inspected to the requirements of 3.5.34.4.7.37 Accessory thread strength (see 3.5.35). The mated connector shall be mounted as in normalservice to a rigid panel. The torque wrench shall be attached as shown on figure 13. After mating theplug and receptacle connectors, a torque shall be applied to the accessory end of the plug at a rateof approximately 10 pounds per second until the required torque is achieved (table XIII). The load soapplied shall be held for a period of one minute after which the load shall be released. The test shall berepeated on the accessory end of the receptacle. The connectors shall then be unmated and inspected to3X magnification for damage or breakage.4.7.38 Electrolytic erosion (see 3.5.36). The wired receptacle half of the connector containing the pincontacts shall be firmly mounted in a vertical position, pins facing up. A salt-water solution (5 percent saltby weight) shall be poured onto the pin interface until the solution level just reaches the pin tips. Thesolution shall remain in the connector for a minimum of 30 seconds and then poured out, lightly shakingexcesses from the connector. The counterpart plug shall immediately be mated with the receptacle. Onecell pattern, with all contacts adjacent to a central contact at a positive polarity and the center contact at anegative polarity, shall be set up at a location giving the most uniform distribution of contacts adjacent tothe center contact. A potential of 60 volts dc shall be applied between the contacts adjacent to the centercontact. The contacts shall be energized for 40 hours. Following this, with the voltage disconnected, theconnectors shall be unmated. For hermetic connectors the interface seal shall be removed and for allother connectors the contact shall be removed. The contacts shall be examined using 3X magnificationfor erosion to base metal.4.7.39 Cavity to cavity leakage bonding integrity (see 3.5.37). Unmated unwired connectors shall besubjected to test procedure 78 of EIA - 364.5. PACKAGING5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in thecontract or order (see 6.2). When actual packaging of a materiel is to be performed by DoD personnel,these personnel need to contact the responsible packaging activity to ascertain requisite packagingrequirements. Packaging requirements are maintained by the Inventory Control Point's packaging activitywithin the Military Department or Defense Agency, or within the Military Department's System Command.Packaging data retrieval is available from the managing Military Department's or Defense Agency'sautomated packaging files, CD-ROM products, or by contacting the responsible packaging activity.5.1.1 Dust Caps. Dust caps in accordance with MS90376 (or equivalent cap) shall be placed on themating end of each connector. For RFI connectors, dust caps must be assembled externally over thecoupling ring. Hermetic connectors require caps on both ends.MIL-DTL-83723F416. NOTES(This section contains information of a general or explanatory nature that may be helpful, but is notmandatory.)6.1 Intended use (all classes).a. Connector backshells must be installed to meet the specified moisture sealing requirements.b. Class G connectors are stainless steel connectors intended for use in environment resisting applications that require a peripheral shield, 200ºC service temperature, and fluid resistance.c. Class R connectors are intended for use in environment resisting applications at 200ºC service temperature. They have conductive finish with fluid resistance requirements.d. Class H receptacles are intended for use in applications where pressures must be contained by the connectors across walls or panels on which they are mounted. They must have fluid resistance insert face seal. Class H receptacles are limited to 150ºC service temperature.e. Class S connectors are intended for use in firewall applications where RFI protection is required. These connectors have self-locking coupling nuts, which eliminates the need for safety wiring and are rated at 200ºC service temperature.f. Class A connectors are intended for use in applications where a conductive shell is not required. Class A connectors also provide excellent durability and resistance to salt spray.g. Class K connectors are intended for use in firewall applications where RFI protection is not required. Class K connectors are available with self-locking coupling nuts.h. Series II receptacles are to be used for maintenance replacement purposes only.i. Series II plugs are to be used for maintenance replacement purposes only.j. Mechanical strain reliefs are intended for use where a saddle type clamp is desired.k. Shrink strain reliefs are intended to provide wire support and vibration dampening when used.l. To remove unwired contacts, contact contractors for specific tools and instructions.m. Class Y receptacles are intended for use in applications where pressures must be contained by the connectors across walls or panels on which they are mounted. They must have fluid resistance insert face seal. Class Y receptacles are rated at 200ºC service temperature.n. Type T th