螺纹加工底孔直径对照表

1、螺纹加工底孔直径对照表本文件包含内容公制粗螺纹2级牙底孔径对照表公制细螺纹2级牙底孔径对照表美制粗螺纹2级牙底孔径对照表美制细螺纹2级牙底孔径对照表公制迫牙丝攻钻孔径对照表美制迫牙丝攻钻孔径对照表美制特细螺纹2级牙底孔径对照表M制电器螺纹底孔径对照表英制管螺纹（PS）底孔径对照表英制管螺纹（PT）底孔径对照表美制管螺纹（NPT、NPS底孔径对照表英制螺纹（UNEF底孔径对照表公制螺纹（滚造径）底孔径对照表针车用其所长螺纹（滚造径）底孔径对照表英制圆柱管螺纹（55度）加工一览表英制锥管螺纹（55度）加工一览表"锥管螺纹加工一览表美制UNCUN醴纹参数表惠氏BSWBSF螺纹参数表公制螺纹

2、特殊材质工件加工底孔径对照表非密封管螺纹底孔径对照表“制锥管螺纹到英制锥螺纹攻丝前钻底孔的钻头直径I日标英制锥度管螺纹底孔径对照表英制平行管螺纹底孔径对照表美制管用螺纹（使用/不使用钱刀）底孔径对照表圆锥管螺纹（新旧国标、日标）底孔径对照表“柱管螺纹（新旧国标、日标）底孔径对照表“锥管螺纹（新旧国标、日标）底孔径对照表”制粗牙（铜、铁、不锈钢、铝质工件）底孔径对照表.制细牙（铜、铁、不锈钢、铝质工件）底孔径对照表60度圆锥管螺纹（钻/链孔）底孔径对照表60度圆柱管螺纹（钻/链孔）底孔径对照表公制粗螺纹规格标准径2级牙钻孔径最大最小M1.0X0.250.750.7850.729M1.1X0.25

3、0.850.8850.829M1.2X0.250.950.9850.985M1.4X0.31.101.1421.075M1.6X0.351.251.3211.221M1.7X0.351.351.4211.321M1.8X0.351.451.5211.421M2.0X0.41.601.6791.567M2.2X0.451.751.8381.713M2.3X0.41.901.9791.867M2.5X0.452.102.1382.013M2.6X0.452.202.2382.113MB.0X0.52.502.5992.459M3.0X0.62.402.4402.280MB.5X0.62.903.0

4、102.850M4.0X0.73.303.4223.242M4.0X0.753.253.3263.106M4.5X0.753.803.8783.688M5.0X0.84.204.3344.134M5.0X0.94.104.1703.930M6.0X1.05.005.1534.917M7.0X1.06.006.1535.917M8.0X1.256.806.9126.647M9.0X1.257.807.9127.647M10<1.58.508.6768.376M11X1.59.509.6769.376M12<1.7510.3010.44110.106M14X2.012.0012.210

5、11.835M16<2.014.0014.21013.835M18X2.515.5015.74415.294M20<2.517.5017.74417.294M22X2.519.5019.74419.294M24X3.021.0021.25220.752M27X3.024.0024.25223.752M30<3.526.5026.77126.211公制细螺纹规格标准径2级牙钻孔径最大最小M1.0X0.20.800.8210.783M1.1X0.20.900.9210.883M1.2X0.21.001.0210.983M1.4X0.21.201.2211.183M1.6X0.21

6、.401.4211.383M1.7X0.21.451.5001.460M1.8X0.21.601.6211.583M2.0X0.251.751.7851.729M2.2X0.251.951.9851.929M2.3X0.252.052.0612.001M2.5X0.352.202.2212.121M2.6X0.352.202.2462.186M3.0X0.352.702.7212.621M3.5X0.353.203.2213.121M4.0X0.53.503.5993.459M4.5X0.54.004.0993.959M5.0X0.54.504.5994.459M5.5X0.55.005.09

7、94.959M6.0X0.755.305.3785.188M6.0X0.55.505.5505.400M7.0X0.756.306.3786.188M7.0X0.56.506.5506.400M8.0X1.07.007.1536.917M8.0X0.757.307.3787.188M8.0X0.57.507.5207.400M9.0X1.08.008.1537.917M).0X0.758.308.3788.188M10<1.258.808.9128.647M10<1.09.009.1538.917M10<0.759.309.3789.188M10<0.59.509.52

8、09.400M11X1.010.0010.1539.917M11X0.7510.3010.37810.188M12<1.510.5010.67610.376M12<1.2510.8010.91210.647M12<1.011.0011.15310.917M12X0.511.5011.52011.400M14<1.512.5012.67612.376M14<1.013.0013.15312.917M15<1.513.5013.67613.376M15<1.014.0014.15313.917M16<1.514.5014.67614.376M16&l

9、t;1.015.0015.15314.917M17<1.515.5015.67615.376M17<1.016.0016.15315.917M18X2.016.0016.21015.835M18<1.516.5016.67616.376M18<1.017.0017.15316.917M20<2.018.0018.21017.835M20<1.518.5018.67618.376M20<1.019.0019.15318.917M22<2.020.0020.21019.835M22<1.520.5020.67620.376M22<1.02

10、1.0021.15320.917M24X2.022.0022.21021.835M24X1.522.5022.67622.376M24X1.023.0023.15322.917M25<2.023.0023.21022.835M25<1.523.5023.67623.376M25<1.024.0024.15323.917M26<1.524.5024.67624.376M27X2.025.0025.21024.835M27X1.525.5025.67625.376M27X1.026.0026.15325.917M28<2.026.0026.21025.835M2佻1.

11、526.5026.67626.376M2佻1.027.0027.15326.917M30X3.027.0027.25226.752M30X2.028.0028.21027.835M30<1.528.5028.67628.376M30<1.029.0029.15328.917M32<2.030.0030.21029.835M32<1.530.5030.67630.376M33<3.030.0030.25229.752M33<2.031.0031.21030.835M33<1.531.5031.67631.376M35<1.533.5033.6763

12、3.376M36<3.033.0033.25232.752M36<2.034.0034.21033.835M36<1.534.5034.67634.376美制粗螺纹规格（UNC标准径2级牙钻孔径最大最小NO.1-64(1.854)1.551.5821.425NO.2-56(2.184)1.801.8711.695NO.3-48(2.515)2.102.1461.941NO.4-40(2.845)2.302.3852.157NO.5-40(3.175)2.602.6972.487NO.6-32(3.505)2.802.8952.642NO.8-32(4.166)3.403.53

13、3.302NO.10-24(4.826)3.903.9623.683NO.12-24(5.486)4.504.5974.3441/4-205.105.2574.9795/16-186.606.7316.4013/8-168.008.1537.7987/16-149.409.559.1441/2-1310.8011.02310.5929/16-1212.2012.44611.9895/8-1113.6013.86813.3863/4-1016.5016.84016.3077/8-919.5019.76119.177122.2022.60621.9711-1/8-725.0025.34924.63

14、81-1/4-728.2028.52427.8131-3/8-630.8031.11530.3531-1/2-634.0034.29033.5281-3/4-539.5039.82738.9642-4-1/245.2045.59344.679美制细螺纹规格（UNF标准径2级牙钻孔径最大最小NO.0-80(1.524)1.251.3051.182NO.1-72(1.854)1.551.6121.474NO.2-64(2.184)1.851.9121.756NO.3-56(2.515)2.102.1972.025NO.4-48(2.845)2.402.4582.271NO.5-44(3.175)2

15、.702.7402.551NO.6-40(3.505)2.903.0222.820NO.8-36(4.166)3.503.6063.404NO.10-32(4.826)4.104.1653.963NO.12-28(5.846)4.604.7244.4961/4-285.505.5885.3605/16-246.907.0356.7823/8-248.508.6368.3827/16-209.9010.0339.7291/2-2011.5011.60711.3299/16-1812.9013.08112.7515/8-1814.5014.68114.3513/4-1617.5017.67817.

16、3237/8-1420.5020.67520.2701-1223.2023.57123.1141-1/8-1226.5026.74626.2891-1/4-1229.5029.92129.4641-3/8-1232.8033.09632.6391-1/2-1236.0036.27135.814公制迫牙丝攻钻孔径规格精度等级G4-G6G7-G8G9M1.0X0.250.860.88一M1.1X0.250.960.98一M1.2X0.251.061.08一M1.4X0.31.241.25一M1.6X0.351.411.43一M1.7X0.351.511.53一M1.8X0.351.611.63一M

17、2.0X0.41.781.80一M2.2X0.451.951.98一M2.3X0.42.082.10一M2.5X0.452.252.28一M2.6X0.452.352.38一M3.0X0.52.732.75一M3.5X0.63.173.20一M4.0X0.73.623.653.69M5.0X0.84.564.604.64M6.0X1.05.455.505.55M7.0X1.06.456.506.55M8.0X1.257.317.387.44M10<1.59.189.259.32M10<1.259.319.389.44M12<1.7511.0411.1211.21M12<

18、1.2511.3111.3811.44美制迫牙丝攻钻孔径规格精度等级G4-G6G7-G8G9NO.2-56UNC1.94一一NO.3-482.23一一NO.4-402.50一一NO.5-402.83一一NO.6-323.07一一NO.8-323.733.77NO.10-244.244.3一NO.12-244.904.961/4-20一5.72一5/16-18一7.24一3/8-16一8.748.817/16-14一10.2010.301/2-13一11.2711.82NO.2-64UNF1.97一一NO.3-562.27一一NO.4-482.56NO.5-442.86一NO.6-403.16一

19、一NO.8-363.78一一NO.10-324.394.43一NO.12-284.995.04一1/4-285.855.90一5/16-247.367.41一3/8-24一9.00一7/16-20一10.4810.541/2-20一12.0712.13美制特细螺纹规格(UNEF)标准径2级牙钻孔径最大最小NO.12-324.704.8264.6231/4-325.605.6905.4865/16-327.107.2647.0873/8-328.708.8658.6617/16-2810.2010.33810.1351/2-2811.8011.93811.7099/16-2413.2013.38

20、613.1325/8-2414.8014.98614.7323/4-2017.8017.95817.6787/8-2021.0021.13320.8531-2024.0024.30824.028英制电器螺纹规格钻孔径英制管螺纹规格标准径钻孔径最大最小英制管螺纹规格标准径标准长度（最小）中之毋螺牙内径使用纹力时不用纹力时由父牙部之长度（最小）中之毋螺牙内径美制管螺纹规格钻孔径NPTNPS使用绞力时不用绞力时1/16-276.106.256.351/8-278.338.438.741/4-1810.7211.1311.133/8-1814.2714.2714.681/2-1417.4817.8618.263/4-1422.6323.0123.421-11-1/228.5828.9829.361-1/4-11-1/237.3137.6938.101-1/2-11-1/243.6644.0444.452-11-1