粗细牙螺纹尺寸一览表.doc

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1、普通螺纹钻底孔用钻头直径尺寸（单位mm）公称直径d螺距P钻头直径D公称直径d螺距P钻头直径D1粗0.250.7518粗2.515.4细0.20.8细21.5115.916.5172粗0.41.620粗2.517.4细0.251.75细21.5117.918.5193粗0.52.522粗2.519.4细0.352.65细21.5119.920.5214粗0.73.324粗320.9细0.53.5细21.5121.922.5235粗0.84.227粗323.9细0.54.5细21.5124.925.5266粗1530粗3.526.3细0.755.2细321.512

2、6.927.928.5298粗1.256.733粗3.529.3细10.7577.2细321.529.930.931.510粗1.58.536粗431.8细1.2510.758.799.2细321.532.933.934.512粗1.7510.239粗434.8细1.51.25110.510.711细321.535.936.937.514粗211.942粗4.537.5细1.51.2512.512.7细4337.838.911321.539.940.516粗213.945粗4.540.3细1.5114.515细4321.540.841.942.943.5