1、螺紋加工底孔直徑對照表本文件包含內容公制粗螺紋2級牙底孔徑對照表公制細螺紋2級牙底孔徑對照表美制粗螺紋2級牙底孔徑對照表美制細螺紋2級牙底孔徑對照表公制迫牙絲攻鉆孔徑對照表美制迫牙絲攻鉆孔徑對照表美制特細螺紋2級牙底孔徑對照表M制電器螺紋底孔徑對照表英制管螺紋（PS）底孔徑對照表英制管螺紋（PT）底孔徑對照表美制管螺紋（NPT、NPS底孔徑對照表英制螺紋（UNEF底孔徑對照表公制螺紋（滾造徑）底孔徑對照表針車用其所長螺紋（滾造徑）底孔徑對照表英制圓柱管螺紋（55度）加工一覽表英制錐管螺紋（55度）加工一覽表"錐管螺紋加工一覽表美制UNCUN醴紋參數表惠氏BSWBSF螺紋參數表公制螺紋

2、特殊材質工件加工底孔徑對照表非密封管螺紋底孔徑對照表“制錐管螺紋到英制錐螺紋攻絲前鉆底孔的鉆頭直徑I日標英制錐度管螺紋底孔徑對照表英制平行管螺紋底孔徑對照表美制管用螺紋（使用/不使用錢刀）底孔徑對照表圓錐管螺紋（新舊國標、日標）底孔徑對照表“柱管螺紋（新舊國標、日標）底孔徑對照表“錐管螺紋（新舊國標、日標）底孔徑對照表”制粗牙（銅、鐵、不銹鋼、鋁質工件）底孔徑對照表.制細牙（銅、鐵、不銹鋼、鋁質工件）底孔徑對照表60度圓錐管螺紋（鉆/鏈孔）底孔徑對照表60度圓柱管螺紋（鉆/鏈孔）底孔徑對照表公制粗螺紋規格標準徑2級牙鉆孔徑最大最小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公制細螺紋規格標準徑2級牙鉆孔徑最大最小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美制粗螺紋規格（UNC標準徑2級牙鉆孔徑最大最小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美制細螺紋規格（UNF標準徑2級牙鉆孔徑最大最小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公制迫牙絲攻鉆孔徑規格精度等級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美制迫牙絲攻鉆孔徑規格精度等級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美制特細螺紋規格(UNEF)標準徑2級牙鉆孔徑最大最小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英制電器螺紋規格鉆孔徑英制管螺紋規格標準徑鉆孔徑最大最小英制管螺紋規格標準徑標準長度（最小）中之毋螺牙內徑使用紋力時不用紋力時由父牙部之長度（最小）中之毋螺牙內徑美制管螺紋規格鉆孔徑NPTNPS使用絞力時不用絞力時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