公制螺紋鉆底孔用鉆頭直徑尺寸表

1、公制螺紋鉆底孔用鉆頭直徑尺寸表.txt如果背叛是一種勇氣，那么接受背叛則需要更大的勇氣。愛情是塊磚，婚姻是座山。磚不在多，有一塊就靈；山不在高，守一生就行。M1:粗扣螺距0.25＝Φ0.75細(xì)扣螺距0.2＝Φ0.8M2:粗扣螺距0.4＝Φ1.6細(xì)扣螺距0.25＝Φ1.8M3:粗扣螺距0.5＝Φ2.5細(xì)扣螺距0.35＝Φ2.7M4:粗扣螺距0.7＝Φ3.3細(xì)扣螺距0.5＝Φ3.5M5:粗扣螺距0.8＝Φ4.2細(xì)扣螺距0.5＝Φ4.5M6:

2、粗扣螺距1＝Φ5細(xì)扣螺距0.75＝Φ5.2M8:粗扣螺距1.25＝Φ6.7細(xì)扣螺距10.75＝Φ7Φ7.2M10:粗扣螺距1.5＝Φ8.5細(xì)扣螺距1.2510.75＝Φ8.7Φ9Φ9.2M12:粗扣螺距1.75＝Φ10.2細(xì)扣螺距1.51.251＝Φ10.5Φ10.7Φ11M14:粗扣螺距2＝Φ11.9細(xì)扣螺距1.51.251＝Φ12.5Φ12.7Φ13M16:粗扣螺距2＝Φ14細(xì)扣螺距1.51＝Φ14.5Φ15M18:粗扣螺距2.5＝

3、Φ15.4細(xì)扣螺距21.51＝Φ15.9Φ16.5Φ17M20:粗扣螺距2.5＝Φ17.4細(xì)扣螺距21.51＝Φ17.9Φ18.5Φ19M22:粗扣螺距2.5＝Φ19.5細(xì)扣螺距21.51＝Φ19.9Φ20.5Φ21M24:粗扣螺距3＝Φ20.9細(xì)扣螺距21.51＝Φ21.9Φ22.5Φ23生產(chǎn)中鉆螺紋底孔公式：t＜1mm:Dz=dtt＞1mm:Dz=d(1.04~1.06)t式中t螺距（毫米）Dz攻絲前鉆頭直徑（毫米）d螺紋公稱直徑（

4、毫米）公制螺紋鉆底孔用鉆頭直徑尺寸表公稱直徑d螺距t鉆頭直徑公稱直徑d螺距t公稱直徑d1粗0.250.752粗0.41.6細(xì)0.20.8細(xì)0.251.753粗0.52.54粗0.73.3細(xì)0.352.65細(xì)0.53.55粗0.84.26粗15細(xì)0.54.5細(xì)0.755.28粗1.256.710粗1.58.5細(xì)17細(xì)1.258.7細(xì)0.757.2細(xì)19細(xì)0.759.212粗1.7510.214粗211.9細(xì)1.510.5細(xì)1.512.5細(xì)

5、1.2510.7細(xì)1.2512.7細(xì)111細(xì)11316粗213.918粗2.515.4細(xì)1.514.5細(xì)215.9細(xì)115細(xì)1.516.5細(xì)11720粗2.517.422粗2.519.4細(xì)217.9細(xì)219.9細(xì)1.518.5細(xì)1.520.5細(xì)119細(xì)12124粗320.927粗323.9細(xì)221.9細(xì)224.9細(xì)1.522.5細(xì)1.525.5細(xì)123細(xì)12630粗3.526.333粗3.529.3細(xì)326.9細(xì)329.9細(xì)227.9細(xì)

6、230.9細(xì)1.528.5細(xì)1.531.5細(xì)12936粗431.839粗434.8細(xì)332.9細(xì)335.9細(xì)233.9細(xì)236.9細(xì)1.534.5細(xì)1.537.542粗4.537.345粗4.540.3細(xì)437.8細(xì)440.8細(xì)338.9細(xì)341.9細(xì)239.9細(xì)242.9細(xì)1.540.5細(xì)1.543.548粗542.752粗546.7細(xì)443.8細(xì)447.8細(xì)344.9細(xì)348.9細(xì)245.9細(xì)249.9細(xì)1.546.5細(xì)1.550.