We are manufacturer, supplier and exporter of ASTM A325 bolts standard in India. the ASTM A325 specification covered high strength heavy hex structural bolts from 1/2″ diameter through 1-1/2″ diameter. These bolts are intended for use in structural connections and therefore have shorter thread lengths than standard hex bolts. Refer to the Structural Bolts page of our site for thread lengths and other related dimensions. In 2016, ASTM A325 was officially withdrawn...