常用管螺纹底孔及深度对照表

1、锥锥管管螺螺纹纹钻钻底底孔孔直直径径及及检检验验方方法法RC螺纹深度检验用具螺纹深度检验用具钻孔直径1/87管接头12堵头8.21/410管接头14堵头113/811管接头15堵头14.51/214管接头18堵头183/415管接头20堵头23118管接头25堵头291+1/420管接头30堵头381+1/222管接头32堵头44225管接头35堵头55锥锥管管螺螺纹纹钻钻底底孔孔直直径径及及检检验验方方法法NPT螺纹深度检验用具螺纹深度检验用具钻孔直径1/87管接头12堵头8.51/410管接头14堵头113/811管接头15堵头14.51/214管接头18堵头183/415管接头20堵头2

2、3118管接头25堵头291+1/420管接头30堵头381+1/222管接头32堵头44225管接头35堵头56要要求求：堵堵头头孔孔要要求求堵堵头头拧拧紧紧后后端端面面低低于于外外平平面面1mm1mm左左右右；管管接接头头孔孔要要求求管管接接头头拧拧紧紧后后有有2-32-3牙牙路路在在外外面面；螺螺丝丝攻攻牙牙钻钻孔孔径径和和滚滚造造径径对对照照表表公制迫牙丝攻钻孔径美制迫牙丝攻钻孔径规格精度等级规格精度等级G4-G6G7-G8G9G4-G6G7-G8G9M1.00.250.860.88NO.2-56UNC1.94M1.10.250.960.98NO.3-482.23M1.20.251.0

3、61.08NO.4-402.50M1.40.31.241.25NO.5-402.83M1.60.351.411.43NO.6-323.07M1.70.351.511.53NO.8-323.733.77M1.80.351.611.63NO.10-244.244.3M2.00.41.781.80NO.12-244.904.96M2.20.451.951.981/4-205.72M2.30.42.082.105/16-187.24M2.50.452.252.283/8-168.748.81M2.60.452.352.387/16-1410.2010.30M3.00.52.732.751/2-1311

4、.2711.82M3.50.63.173.20NO.2-64UNF1.97M4.00.73.623.653.69NO.3-562.27M5.00.84.564.604.64NO.4-482.56M6.01.05.455.505.55NO.5-442.86M7.01.06.456.506.55NO.6-403.16M8.01.257.317.387.44NO.8-363.78M101.59.189.259.32NO.10-324.394.43M101.259.319.389.44NO.12-284.995.04M121.7511.0411.1211.211/4-285.855.90M121.25

5、11.3111.3811.445/16-247.367.413/8-249.007/16-2010.4810.541/2-2012.0712.13美制特细螺纹英制电器螺纹规格(UNEF)标准径2级牙钻孔径规格钻孔径最大最小NO.12-324.704.8264.6232BA4.0-4.21/4 -325.605.6905.4863BA5/16 -327.107.2647.0874BA3.0-3.23/8 -328.708.8658.6615BA2.7-2.87/16 -2810.2010.33810.1356BA2.4-2.51/2 -2811.8011.93811.7099/16 -2413.

6、2013.38613.1325/8 -2414.8014.98614.7323/4 -2017.8017.95817.6787/8 -2021.0021.13320.8531 -2024.0024.30824.028螺螺丝丝攻攻牙牙钻钻孔孔径径和和滚滚造造径径对对照照表表英制管螺纹英制管螺纹美制管螺纹规格G标准径钻孔径规格Rc ZG标准径有交牙部之长度（最小）中之毋螺牙内径标准长度（最小）中之毋螺牙内径规格钻孔径最大最小使用纹刀时不用纹刀时NPT ZNPS使用绞刀时不用绞刀时PS 1/16 - 286.506.6326.490PT 1/16 - 286.106.206.2446.3841/16

7、 - 276.106.256.35PS 1/8 - 288.508.6378.495PT 1/8 - 288.108.208.2498.3881/8 - 278.338.438.74PS 1/4 - 1911.4011.54911.341PT 1/4 - 1910.7011.0010.96211.1741/4 - 1810.7211.1311.13PS 3/8 - 1915.0015.05414.846PT 3/8 - 1914.2014.5014.44814.6583/8 - 1814.2714.2714.68PS 1/2 - 1418.5018.77318.489PT 1/2 - 1417

8、.6018.0017.97918.2631/2 - 1417.4817.8618.26PS 3/4 -1424.0024.25923.975PT 3/4 - 1423.0023.5023.37823.6633/4 - 1422.6323.0123.42PS 1 - 1130.2030.47130.111PT 1- 1129.0029.5029.45929.8221 - 11-1/228.5828.9829.36PS 1-1/4 - 1138.8039.13238.772PT 1-1/4 - 1137.5038.0037.97638.3391-1/4-11-1/237.3137.6938.10P

9、S 1-1/2 - 1144.8045.02544.665PT 1-1/2 - 1143.4044.0043.86944.2321-1/2-11-1/243.6644.0444.45PS 2 - 1156.5056.83656.476PT 2 - 1154.9055.5055.41255.8442 - 11 - 1/255.5855.9656.36螺螺丝丝攻攻牙牙钻钻孔孔径径和和滚滚造造径径对对照照表表英制螺纹公制螺纹针车用螺纹规格(UNEF)钻孔径规格滚造径规格滚造径硬材软材W 1/8 - 402.652.60M30.52.63-2.60SM1/8-402.735-2.688W 5/32 -

10、 323.253.20M3.00.62.56-2.53SM1/8-442.769-2.722W 3/16 - 243.753.70M3.50.63.06-3.03SM9/64-403.128-3.083W 1/4 - 205.105.00M4.00.73.49-3.45SM11/64-403.855-3.805W 5/16 - 186.606.50M4.00.753.45-3.41SM3/16-324.205-4.155W 3/8 - 168.007.90M4.50.753.96-3.92SM3/16-284.143-4.093W 7/16 - 149.409.30M5.00.84.43-4.38SM7/32-325.003-4.955W 1/2 - 1210.7010.50M5.00.94.36-4.31SM15/64-285.325-5.570W 9/16 - 1212.3012.00M6.01.05.30-5.25SM1/4-405.890-5.735W 5/8 - 1113.7013.50M7.01.06.30-6.25SM1/4-285.721-5.366W 3/4 - 1016.7016.50M8.01.07.28-7.23SM9/32-286.508-6.648W 7/8 - 919.5019.30M8.01.257.12-7.07SM11/32-288.0