Nord-Lock Inc

Nord-Lock Inc

For over 30 years, Nord-Lock has provided safe, reliable bolting solutions. More than just a range of products, the Nord-Lock Group offers real value from the design to the operation & maintenance phases of your equipment. The Nord-Lock Group is a world leader in bolt securing systems. Our unique combination of innovative products and expertise enables us to solve the toughest bolting challenges. Nord-Lock bolting solutions include multifunctional wedge-locking technology, wedge-locking technology, Superbolt tensioners and Expansion bolts, and the Boltight hydraulic tensioning system. Our high quality products are manufactured at state-of-the-art production facilities in Sweden, United Kingdom, Switzerland and North America. We are able to meet your needs quickly and according to the highest standards – our certifications and independent approvals include: ABS, DIBt, DNV and TÜV.

Company details

1000 Gregg Street , Carnegie , 15106 Pennsylvania, USA
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Business Type:
Industry Type:
Manufacturing, Other
Market Focus:
Globally (various continents)
Year Founded:

This company also provides solutions for other industrial applications.
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  • Our vision is to be the trusted global partner in optimization of bolted connections.
  • Our mission is to safeguard human lives and customer investments.

Unmatched Expertise

Our experienced staff of engineers and bolting experts are always ready to help you realize safe and efficient bolting. Nord-Lock has decades of documented success in every major industry including oil & gas, energy, railway and mining. We pride ourselves on providing reliable and high quality bolting solutions that help workers in their everyday lives and ultimately help companies improve their bottom line.

We have in-house R&D and Project Engineering, and our global teams are able to provide in-depth education and support, according to your needs. Nord-Lock can also help you in the design phase of your equipment with joint simulation and testing, see more under Performance Services. Our production process follows the LEAN standard and includes rigorous internal testing and full traceability. We add value throughout a project and ensure that your bolting application will pay back multiple times.

Global Partnership

With Nord-Lock offices around the world and several Technical Centers available for customized tests, we are close to our customers. Our strong owner, Investment AB Latour, ensures that we are able to invest in the future and constantly expand to meet our customer’s needs. Nord-Lock works with external testing facilities and standardization organizations, as well as authorized distributors, on a local, regional and international level. We also hold and invest in partnerships with OEMs and end users. All of this adds up to a company you can trust to find the right solution for your bolting needs.

The Nord-Lock Group has been dedicated to safe bolting since 1982. Our expanding sales organization has subsidiaries located in Europe, US and Asia. Furthermore; we have a worldwide distribution network through sales partners and authorized distributors. The Nord-Lock Group is wholly owned by Investment AB Latour, a company listed on the Stockholm Stock Exchange.

In 2011 the Nord-Lock Group acquired Superbolt Inc and P&S Vorspannsysteme AG (today Nord-Lock AG). In 2015, the Nord-Lock Group acquired Boltight Limited, a leading hydraulic bolt tensioning company.

These expansions bring together the most innovative and trusted bolt securing technologies in the world. The combined competence in our Group allows us to serve global customers with an impressive line-up of safe and cost effective solutions for critical applications.


In 1974 Steinbock Machinery received an order from US Steel to design and manufacture a new type of scrap chopper for a pipemill. The previous design required regular maintenance, including several knife changes per day. The old scrap chopper would also completely break down every couple of weeks.

Rolf Steinbock, then President of Steinbock Machinery Corp., succeeded in designing a scrap chopper which minimized these problems. The daily maintenance of changing knives became just a weekly procedure. However, a persistent problem remained. Because of the constant rotation of the machine, bolts became loose and the maintenance people had to tighten them with a sledgehammer on a regular basis.

One day, by coincidence, Rolf Steinbock walked in just when the bolts had become loose again. The idea for a solution came right then: “Why not split up one big torque into a number of small torques!”

He quickly made a sketch of a 2″ bolt with a round head that had eight 5/8″ socket head screws arranged in a circle on the bolthead. He also specified a hardened washer to go under the head so that the socket screws would not damage the housing. The US Steel maintenance people fabricated a set of the bolts to Rolf’s sketch and installed them. Much to the customer’s satisfaction, the bolts never came loose again.

Rolf expanded on the principle of the jackbolts and patented it under the name Superbolt®. Conventional nuts and bolts could now be replaced by nut-style and bolt-style multi-jackbolt tensioners and eliminate many of the common bolting problems experienced in heavy industries. The company quickly grew as more and more businesses discovered this unique bolting solution. A family owned and operated business, Rolf recruited his sons Robert and Allan into the enterprise, and the company continued to diversify and expand.

After Rolf’s passing in 2001, Robert and Allan continued to grow the business, tripling the size over the next 10 years.

In 1988 Rolf Steinbock and Gert Ploke founded P&S Vorspannsysteme AG in Rüeterswil, Switzerland. At the beginning the office was based in the house of the Ploke family and was managed by Mrs. Ploke. The garage was used as the factory.

From this time on Superbolt products were offered and manufactured with an exclusive license for the European market. Robert Ploke, son of the co-founder and main stockholder Gert Ploke, joined the company shortly afterwards. In 1993, the successful company moved into a new office building in St. Gallenkappel. In order to meet the increasing demand for high-quality multi-jackbolt tensioners, a new building was built in 2005 and expanded with another new building in 2011.

In 2011 the Nord-Lock Group acquired Superbolt Inc. and P&S Vorspannsysteme AG (today Nord-Lock AG). At both locations Superbolt develops and manufactures high-quality multi-jackbolt tensioners. Thanks to this almost four-decade tradition, Superbolt is known for cost-effective bolting solutions in every major industry, all over the world. And now, with the Nord-Lock Group, our unique combination of innovative technology and expertise enables us to solve the toughest bolting challenges.