螺纹钻底孔用钻头直径尺寸表.doc

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1、公制螺纹钻底孔用钻头直径尺寸表（毫米）公称直径d螺距t钻头直径dz公称直径d螺距t钻头直径dz1粗0.250.7522粗2.519.5细0.20.8细21.5119.920.5212粗0.41.624粗320.9细0.251.75细21.5121.922.5233粗0.52.527粗324细0.352.65细21.5124.925.5264粗0.73.330粗3.526.5细0.53.5细321.5126.927.928.5295粗0.84.233粗3.529.5细0.54.5细321.529.930.931.56粗1536粗432细0.755.2细321.532.933.934

2、.58粗1.256.739粗435细10.7577.2细321.535.936.937.510粗1.58.542粗4.537.3细1.2510.758.799.2细4321.537.838.939.940.512粗1.7510.245粗4.540.5细1.51.25110.510.711细4321.540.841.942.943.514粗211.948粗542.7细1.51.25112.512.713细4321.543.844.945.946.516粗21452粗547细1.5114.515细4321.547.848.949.950.518粗2.515.4细21.5115.916

3、.51720粗2.517.4细21.5117.918.519