查看内容。概述（a）本标准介绍了螺纹测量系统 适用于确定联合国的可接受性， UNR、UNJ、M和MJ外螺纹和外螺纹 内螺纹产品。它确立了标准 用于测量系统安装时的螺纹验收 习惯于（b） 螺纹测量系统包括以下各项: 必须检查的螺纹特性/ 评估以确定螺钉的可接受性 螺纹产品上的螺纹和 应在检查/评估这些特性时使用。（c） 联邦政府使用。这个标准是 经国防部和联邦政府批准 并被纳入FED-STD-H28/20， 联邦服务的螺纹标准，第节 20.联邦政府对本标准的使用 受以下条款的所有要求和限制: FED-STD-H28/20。

View contents.GENERAL(a) This Standard presents screw thread gaging systems suitable for determining the acceptability of UN, UNR, UNJ, M, and MJ screw threads on externally and internally threaded products. It establishes the criteria for screw thread acceptance when a gaging system is used.(b) A screw thread gaging system comprises a list of screw thread characteristics that must be inspected/ evaluated to establish the acceptability of the screw threads on a threaded product and the gage(s) which shall be used when inspecting/evaluating those characteristics.(c) Federal Government Use. This Standard is approved by the Department of Defense and federal agencies, and is incorporated into FED-STD-H28/20, Screw Thread Standards for Federal Services, Section 20. The use of this Standard by the federal government is subject to all the requirements and limitations of FED-STD-H28/20.