ASTM A 449 - 07a Standard Specification for Hex Cap Screws, Bolts and Studs, Steel, Heat Treated, 120/105/90 ksi Minimum Tensile Strength, General Use

American Society for Testing and Materials (ASTM). Current edition approved Aug. 1, 2007. Published August 2007. Originally approved in 1963. Last previous edition approved in 2007 as A 449 – 07a. 8 p. This specification covers quenched and tempered steel hex cap screws, bolts, and studs having a minimum tensile strength of 120 ksi for diameters 1.0 in. and smaller; 105 ksi for diameters over 1.0 in. to 11⁄2 in.; and 90 ksi for diameters 13⁄4 in. to 3.0 in. inclusive. The term 9fasteners9 in this specification denotes hex cap screws, bolts, and studs.