Stalwart Technosource India Pvt Ltd is a leading manufacturer and supplier of Fasteners & Shear Studs & has its expertise in ROB for Railways and supplies to RDSO approved projects across India with Brand Name: “STALWART”

Stalwart Technosource India Pvt Ltd. meets all the specifications and Codes of practices of Railways. We have a team of expert professionals who are highly qualified and experienced in manufacturing these products by using premium quality materials and according to the specifications of the clients.

Our organization is supported by a capacious infrastructure facility that is equipped with advanced machinery, House Heat Treatment, and testing facilities. Our High Strength Friction Grip Bolts (HSFG) bolts are high strength structural bolts that have been tightened such as 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.

Our High friction grip bolts are commonly used in structural steelwork. They normally consist of high tensile strength bolts and nuts with washers. The bolts are tightened to a shank tension so that the transverse load across the joint is resisted by the friction between the plated rather than the bolt shank’s shear strength.

HSFG bolts have the following advantages when compared with Normal bolts:
  • The performance of preloaded HSFG bolts under fatigue loading is good because the prestressed bolts are subjected to a reduced stress range during each loading cycle when compared with unloaded bolts.
  • For structures adjacent to machinery which generate substantial vibration, preloading bolts can help to avoid the loosening of bolts.
  • HSFG bolts are used in connections where any slight slip movement would render the integrity of the whole structure break down.
  • Owing to its high tensile strength, it is commonly used in connections that require the taking up of high flexure and the tensile stress generated could be readily resisted by its high tensile strength.