本SAE推荐实施规程定义、说明和规定了在制造和加工螺栓、螺钉和螺柱过程中可能出现的各种类型的表面不连续性的允许限值，这些螺栓、螺钉和螺柱的直径尺寸为24 mm或1（含），长度为150 mm或6英寸（含），规定的最小抗拉强度为900 MPa或120 000 psi及以上，主要用于汽车总成。

This SAE Recommended Practice defines, illustrates, and specifies allowable limits for various types of surface discontinuities that may occur during the manufacture and processing of bolts, screws, and studs in sizes through 24 mm or 1 in diameter inclusive with lengths to 150 mm or 6 in inclusive, having specified minimum tensile strengths of 900 MPa or 120 000 psi and greater, which are primarily intended for use in automotive assemblies.