本SAE航空航天标准（AS）的范围是定义主要用于推进系统的双六角头、六角头和三通头螺栓以及带有AS8879 UNJ英寸系列螺纹的螺母的以下尺寸要求。设计要求基于尺寸为0.1640及以下的UNJC螺纹和尺寸为0.1900及以上的UNJC螺纹。

The scope of this SAE Aerospace Standard (AS) is to define the following dimensional requirements for double hexagon, hexagon head and tee headed bolts, and nuts with AS8879 UNJ inch series threads primarily for use in propulsion systems. Design requirements are based on UNJC threads for sizes 0.1640 and smaller and UNJF threads for sizes 0.1900 and larger.