1.1 ,This specification2 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 "fasteners" in this specification denotes hex cap screws, bolts, and studs.