High Strength Friction Grip Bolts (HSFG) bolts are high strength structural bolts that can been tightened to induce tension in the bolt shank. Due to the tension in the bolt, the interface between the plies (steel members in a joint) cannot move relative to each other because of the friction resistance.
High strength friction grip boltsBolt, load indicator, Hardened steel washer and NutCE ApprovedBS EN4399Self colourAvailable in Galv