1.1本规范涵盖了标称直径为0000至3/4 in.的非热处理碳钢机用螺钉的要求。最小极限抗拉强度为6000psi。

1.1 This specification covers the requirements for non-heat treated carbon steel machine screws with nominal diameters of No. 0000 through 3/4 in. having a minimum ultimate tensile strength of 60 000 psi.