作废 JB/T 8824.2-1998
统一螺纹丝锥 螺纹公差 统一螺纹丝锥 螺纹公差 Manufacturing tolerances on the threaded portion for unified threads taps
发布日期:1998-12-29
实施日期:1999-07-01
分类信息
标准简介

JB/T 8824.2-1998 本标准参照美国标准 ANSI B94.9-1987《切削和磨制丝锥》中相关部分制订。其中大径极限偏差、螺距偏差、牙型半角偏差等效采用美国标准。根据我国国情,对中径极限偏差进行了修订。 本标准规定了统一螺纹丝锥的螺纹牙型和尺寸的极限偏差。 本标准适用于加工统一螺纹的丝锥。 本标准于 1998 年 12 月 29 日首次发布

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最后更新时间 2025-08-30