Fasteners servicing in construction industries are coined as Structural Fasteners. These fasteners are pivotal in fixing structural joints for constructing bridges, damns and other giant constructions as well as for building infrastructure for transportation such as roadways and railways, etc. Structural fasteners also covers building up defense infrastructure. Structural Fasteners have high strength, durability and moderate corrosion resistance. Most of the fasteners under this label are manufactured from high strength carbon steel. ASTM specification A193, A307, A449, A490, A563, F568, F1554 covers most of grades and requirements for manufacturing structural fasteners.