Structural Bolts Dealers in Bangalore

The HSFG (high strength friction grip) Structural Bolts works differently. Material is similar to grade 8.8 bolts with different shaped heads and nuts. The nut is tightened in a carefully controlled manner to put a large pretension into the bolt shank. ISO IS3757 Advantages: Excellent performance of preloaded HSFG bolts under fatigue loading. Greater firmness and capability to endure sporadic forces.