High Strength Friction Grip Bolt

High strength friction grip bolts are hexagon head bolts used in structural steelwork. They clamp steel plates together so that friction carries the load.

A high strength friction grip bolt joins steel members in structural work. It is tightened to clamp the plates together so that friction carries the load. It takes a nut and usually two washers of the same size and grade, and a torque wrench or powered wrench sets the tension.

This kind of bolt is often made in alloy steel. The material gives the high strength needed for the joint.

This is a general guide to checking this kind of part. It says nothing about any supplier's parts.

Ask for a mill test certificate and a certificate of conformance. On receipt, check the bolt markings, thread condition and that washers are included.