标准摘要
[中文适用范围]： 本文件规定了航空航天结构内螺纹（盲螺纹孔）的导程和跳动螺纹以及底切要求。 只要在定义文档中引用它，它就适用。 [外文原描述]： This document specifies the lead and runout thread and undercut requirements for internal threads (blind tapped holes) for aerospace construction. It is applicable whenever it is referenced in a definition document.
英文名称Aerospace — Lead and runout threads — Part 2: Internal threads