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ISO general purpose screw threads — Basic and design profiles — Part 2: Inch screw threads ISO通用螺纹基本轮廓和设计轮廓第2部分:英制螺纹
发布日期: 2023-10-05
本文件规定了ISO英制螺纹(UN和UNR)的基本轮廓和设计轮廓。 UN适用于内螺纹和外螺纹。UNR仅适用于外部线程。由于螺纹加工,为UN螺纹指定了平坦或圆形根部轮廓,而为UNR外螺纹仅指定了已定义的圆形根部轮廓。 本文件适用于英制紧固螺纹。

This document specifies the basic and design profiles for ISO inch screw threads (UN and UNR).

UN applies to both internal and external threads. UNR only applies to external threads. A flat or rounded root contour, due to the threading process, is specified for UN threads, while only a defined rounded root contour is specified for UNR external threads.

This document is applicable to the inch fastening screw threads.

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