BS 949-4-1990 标准详情
- 标准号:BS 949-4-1990
- 中文标题:丝锥.第4部分:米制磨牙丝锥规范:制造公差
- 英文标题:screwing taps - specification for metric ground thread taps: manufacturing tolerances
- 标准类别:英国标准
- 发布日期:1990-06-29
Manufacturing tolerances on the threaded portion of taps for producing ISO metric threads of tolerance classes 4H to 8H and 4G to 6G. Valid for short taps specified in ISO/R 529 as well as any other kind of ground thread taps with the same diameters
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