Ground thread taps for pipe threads g series and rp series - tolerances on the threaded portion G系列和rp系列管螺纹用的磨制螺纹丝锥.螺纹部分的公差
Ground thread taps for iso metric threads of tolerances 7g , 8g and special tolerances , coarse and fine pitches - part 4 : manufacturing tolerances on the threaded portion 粗螺距及细螺距的7g , 8g公差和特殊公差的iso螺纹米制
Ground thread taps for iso metric threads of tolerances 4h to 8h and 4g to 6g coarse and fine pitches . manufacturing tolerances on the threaded portion 公差为至和至大小螺距的米制螺纹的磨齿丝锥.螺纹部分的制造公差