用于生产公差等级为4H至8H和4G至6G的ISO公制螺纹的丝锥螺纹部分的制造公差。适用于ISO/R 529中规定的短丝锥以及具有相同直径和螺距的任何其他类型的地螺纹丝锥。交叉引用:BS 949:第1BS 949部分:第2BS 949部分:第3BS 949部分:第5BS 3643部分:第1BS 5346ISO 529ISO 2283ISO 2284ISO 5969部分

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 and pitches.Cross References:BS 949:Part 1BS 949:Part 2BS 949:Part 3BS 949:Part 5BS 3643:Part 1BS 5346ISO 529ISO 2283ISO 2284ISO 5969