公制螺纹底孔深度明细表

公制粗牙M1.0M1.1M1.2M1.4M1.6M1.7M1.8M2.0M2.2M2.3M2.5M2.6M3.0M3.0M3.5M4.0M4.0M4.5M5.0M5.5M6.0M7.0M8.0M9.0M10.0M11.0M12.0M14.0M16.0M18.0M20.0M22.0M24.0M27.0M30.0M33.0M36.0M39.0M42.0M45.O牙距0.250.250.250.300.350.350.350.400.450.450.450.450.500.600.600.700.750.750.800.901.001.001.251.251.501.501.752.002.002.502.502.503.003.003.503.504.004.004.504.50底孔径0.750.850.951.101.251.351.451.601.751.902.102.202.502.402.903.303.253.804.204.105.006.006.807.808.509.5010.3012.0014.0015.5017.5019.5021.0024.0026.5029.5032.0035.0037.5040.50钻孔深度螺纹深度4.004.004.004.005.006.006.006.006.006.007.007.008.008.008.009.009.0010.0014.0014.0015.0015.0018.0018.0020.0020.0020.0025.0025.003.003.003.003.003.504.004.004.004.004.004.504.506.006.006.007.007.008.0011.0011.0012.0012.0015.0015.0017.0017.0017.0022.0022.00公制细牙M1.0M1.1M1.2M1.4M1.6M1.8M2.0M2.5M3.0M3.5M4.0M4.5M5.0M5.5M6.0M7.0M8.0M8.0M9.0M9.0M10.0M10.0M10.0M11.0M11.0M12.0M12.0M12.0M14.0M15.0M15.0M16.0M16.0M17.0M17.0M18.0M18.0M18M20.0M20.0M20.0M22.0M22.0牙距0.200.200.200.200.200.200.250.350.350.350.500.500.500.500.750.751.000.751.000.751.251.000.751.000.751.501.251.001.501.501.001.501.001.501.002.001.501.002.001.501.002.001.50底孔径钻孔深度0.800.901.001.201.401.601.752.202.703.203.504.004.505.005.306.307.007.308.008.308.809.009.3010.0010.3010.5010.8011.0012.5013.5014.0014.5015.0015.5016.0016.0016.5017.0018.0018.5019.0020.0020.504.004.004.004.005.006.006.006.008.008.009.009.0014.0014.0015.0015.0018.0018.0018.0018.0020.0020.0020.0020.0020.0020.0020.0020.0025.0025.0025.0025.0025.00螺纹深度3.003.003.003.003.504.004.004.006.006.007.007.0011.0011.0012.0012.0015.0015.0015.0015.0017.0017.0017.0017.0017.0017.0017.0017.0022.0022.0022.0022.0022.00说明:螺纹有效深度要大于螺孔直径的1.5倍,如M4有效牙要大于6mm

孔深应该指的的螺纹的底孔深度，螺纹深度一般是指的螺纹的有效距离。通常情况下螺纹底孔深度都是比螺纹的有效长度要大的，因为在螺纹加工过程中存在一个让刀的距离。如图bm+d就是底孔深度，bm+0.5d便是螺纹的有效距离。bm是旋合长度