本SAE零件标准涵盖根据美国材料与试验协会（ASTM）和SAE紧固件标准制造的选定公制螺钉、六角螺栓和螺母。本文件涵盖了船舶系统和设备中经常使用的紧固件材料，但其使用可能适用于使用覆盖材料紧固件的任何地方。本文件允许按照本文件中定义的零件或识别号（PIN）对紧固件进行识别和订购。

This SAE Part Standard covers selected metric screws, hex bolts, and nuts manufactured in accordance with American Society for Testing and Materials (ASTM) and SAE fastener standards. This document covers fastener materials often used in ship systems and equipment but its use may be applied wherever fasteners of the covered materials are used. This document permits the fasteners to be identified and ordered by a part or identifying number (PIN) as defined in this document.