ASTM A 325 - 07 Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength

American Society for Testing and Materials (ASTM). Current edition approved Sept. 15, 2007. Published September 2007. Originally approved in 1964. Last previous edition approved in 2006 as A 325 – 06. 8 p. This specification covers two types of quenched and tempered steel heavy hex structural bolts having a minimum tensile strength of 120 ksi for sizes 1.0 in. and less and 105 ksi for sizes over 1.0 to 11⁄2 in., inclusive.