ASTM A325 – Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength
This specification covers two types of quenched and tempered, steel, metric heavy hex structural bolts. The bolts are intended for use in structural connections. The bolts are furnished in sizes M12 to M36 inclusive.
bolts; carbon steel; steel; structural; weathering steel