4B Group products

EURO elevator bolts have a concave head and two lugs on the underside to help prevent rotation when tightening. The Euro elevator bolts are intended for the attachment of pressed steel elevator buckets incorporating recessed bolt holes. The recessed area surrounding the bolt hole is intended to accommodate the similarly domed surface under the bolt head. 

Reference 70™ (REF 70™) are ISO grade 5.8 elevator bolts with a concave head and four lugs on the underside to help prevent rotation when tightening. The REF 70™ bolt, when coupled with the special oval washer, is ideal for steel elevator buckets in heavy-duty industrial applications on larger diameter pulleys over 50 cm in diameter. Because of this domed area under the bolt head, these bolts are not recommended for flat back plastic buckets, especially on thinner belts..

The fanged elevator bolt is characterized by two sharp teeth that are intended to penetrate the carcass of the elevator belt. Once the teeth penetrate the belt, they help keep the bolt from spinning which easily allows the lock nut to be tightened.

4B Easifit elevator bolts are unique in that they employ a hexagon tip. Special installation tools lock onto the tip, keeping the bolt from spinning as the lock nut is tightened. Fanged or square shoulder designs have to "bite" into the belt to keep from rotating during nut installation. Easifit bolts are especially useful for repair jobs where only the elevator buckets and not the belt are being replaced since they eliminate the problem of elongated bolt holes that can no longer accept the square shoulders of other bolt styles.a