国标螺孔直径对照表
各种螺纹详细参数和钻孔直径对照表
螺纹下孑L径表JIS B °2°9 J982（單位：mm）JIS B 0211-1982(單位：mm)螺纹下孔径表公制細牙螺纹JIS B 0211-1982 (單位:mm )註⑴等級：6H⑵基於JIS B 0211-1982標準 螺纹下孔径表螺纹下孔径表美制粗牙螺纹（單位：m m ）美制細牙螺纹（單位：m m）螺纹下孔径表英制粗牙螺纹（單位：m m ）螺纹下孔径表英制管用螺纹(單位：mm)螺纹下孔径表英制平行管用螺纹PF(G) (劉立：mm)使用粗線左側數據作為攻絲前的底孔直径，可加工符合JIS B 0202的A 級或B 級的內螺纹小径。
美制斜行管用螺纹(NPT7NPS)(單位：mm)上述钻头直径來源於美制管用螺纹 ANSI / ASME B1.20.1 —1983 Pipe Threads, Ge neral Purpose (In ch) 標準螺纹下孔径表美制管用耐密斜行螺纹(N PTF7NPSF)(單位：mm)上述钻头直径來源於美制管用耐密斜行螺纹ANSI B1.20.3 —1957 Dryseal Pipe Threads (Inch)標準璽纹下孔径表（無屑絲攻用）美制細牙螺纹（單位：英制管用平行螺纹（NRT）（單位：mm ）螺纹下孔径表（無屑絲攻用）公制螺纹（HRT）（單位：mm ）螺纹下孔径表（護套螺纹用）公制粗牙螺纹HL-NRT （單位：mm ）璽纹下孔径表（護套螺纹用）公制粗牙螺纹（單位：螺纹下孔径表（護套螺纹用）（單位：美制細牙螺纹（單位：各種換算表美制螺絲外徑公厘(mm)換算表山數節距換算表 管用螺絲基準寸法(mm)0.0730 1.854。
超全螺纹攻牙钻孔直径和滚造直径对照表,值得收藏!
M17×1.0
16.00
16.153
15.917
M18×2.0
16.00
16.210
15.835
M18×1.5
16.50
16.670
16.376
M18×1.0
17.00
17.153
16.917
M20×2.0
18.00
18.210
17.835
M20×1.5
18.50
18.676
18.376
39.50
39.827
38.964
2 -4-1/2
45.20
45.593
44.679
英制螺纹
规格
钻孔径
硬材
软材
W1/8 - 40
2.65
2.60
W5/32 - 32
3.25
3.20
W3/16 - 24
3.75
3.70
W1/4 - 20
11.938
11.709
9/16 -28
13.20
13.386
13.132
5/8 -24
14.80
14.986
14.732
3/4 -20
17.80
17.958
17.678
7/8 -20
21.00
21.133
20.853
1 -20
24.00
24.308
24.028
美 制 粗 螺 纹
规格(UNC)
标准径
1.40
1.421
1.383
M1.7×0.2
1.45
1.500
1.460
M1.8×0.2
1.60
螺纹孔参照表
螺纹攻牙钻孔径和滚造径对照表
本表所推选之钻头孔径，是针对攻牙加工时，能够很容易的了解钻孔直径；而依据市售之标准钻头所选定的。
在使用钻头的情况下，由于钻头的形状及尺寸、精度、被钻孔之材质等，对于所钻孔的尺寸、精度有很大的影响，所以使用本表之钻孔径，若有不
注：迫牙丝攻之钻孔径，在上表所列之数
值，由于被加工 材料之材质、硬度、形状
、尺寸等之影响，多少会有所变动，因此
于参考上表之同时，亦请增减若干。
当之处，应视实际状况适当的变更钻头直径。
本表是依据2级牙制订。
螺纹孔径对照表
当之处，应视实际状况适当的变更钻头直径。
本表是依据2级牙制订。
注：迫牙丝攻之钻孔径，在上表所列之数
值，由于被加工 材料之材质、硬度、形状
、尺寸等之影响，多少会有所变动，因此
于参考上表之同时，亦请增减若干。
螺纹攻牙钻孔径和滚造径对照表
本表所推选之钻头孔径，是针对攻牙加工时，能够很容易的了解钻孔直径；而依据市售之标准钻头所选定的。
在使用钻头的情况下，由于钻头的形状及尺寸、精度、被钻孔之材质等，对于所钻孔的尺寸、精度有很大的影响，所以使用本表之钻孔径，若有不。
螺纹孔参照表很全面
螺纹孔参照表很全⾯最⼤最⼩最⼤最⼩G4-G6G7-G8G9G4-G6G7-G8硬材软材M1.0*0.250.750.7850.729M12*1.011.0011.15310.917M1.0*0.250.860.88No.2-56UNC 1.94 2.65 2.60M1.1*0.250.850.8850.829M12*0.511.5011.52011.400M1.1*0.250.960.98No.3-48 2.23 3.25 3.20M1.2*0.250.950.9850.929M14*1.512.5012.67612.376M1.2*0.25 1.06 1.08No.4-40 2.50 3.75 3.70M1.4*0.31.10 1.142 1.075M14*1.013.0013.15312.917M1.4*0.3 1.24 1.25No.5-40 2.83 5.10 5.00M1.6*0.351.25 1.321 1.221M15*1.513.5013.67613.376M1.6*0.35 1.41 1.43No.6-32 3.07 6.60 6.50M1.7*0.351.35 1.421 1.321M15*1.014.0014.15313.917M1.7*0.35 1.51 1.53No.8-32 3.73 3.778.007.90M1.8*0.351.45 1.521 1.421M16*1.514.5014.67614.376M1.8*0.35 1.61 1.63No.10-24 4.24 4.309.409.30M2.0*0.41.60 1.679 1.567M16*1.015.0015.15314.917M2*0.4 1.78 1.80No.12-24 4.90 4.9610.7010.50M2.2*0.451.75 1.838 1.713M17*1.515.5015.67615.376M2.2*0.45 1.95 1.981/4 -20 5.7212.3012.00M2.3*0.41.90 1.979 1.867M17*1.016.0016.15315.917M2.3*0.4 2.08 2.105/16 -187.2413.7013.50M2.5*0.452.10 2.138 2.013M18*2.016.0016.21015.835M2.5*0.45 2.25 2.283/8 -168.7416.7016.50M2.6*0.452.20 2.238 2.113M18*1.516.5016.67616.376M2.6*0.45 2.35 2.387/16 -1410.2019.5019.30M3.0*0.52.50 2.599 2.459M18*1.017.0017.15316.917M3.0*0.5 2.73 2.751/2 -1311.2722.4022.00M3.0*0.62.40 2.440 2.280M20*2.018.0018.21017.835M3.5*0.6 3.17 3.20No.2-64UNF 1.9725.0024.80M3.5*0.62.903.010 2.850M20*1.518.5018.67618.376M4.0*0.7 3.62 3.65 3.69No.3-56 2.2728.3028.00M4.0*0.73.30 3.422 3.242M20*1.019.0019.15318.917M5.0*0.84.56 4.60 4.64No.4-48 2.56M4.0*0.753.25 3.326 3.106M22*2.020.0020.21019.835M6.0*1.0 5.45 5.50 5.55No.5-44 2.86M4.5*0.753.80 3.878 3.688M22*1.520.5020.67620.376M7.0*1.0 6.45 6.50 6.55No.6-40 3.16M5.0*0.84.20 4.334 4.134M22*1.021.0021.15320.917M8.0*1.257.317.387.44No.8-36 3.78M5.0*0.94.10 4.170 3.930M24*2.022.0022.21021.835M10*1.59.189.259.32No.10-32 4.39 4.43M6.0*1.05.00 5.153 4.917M24*1.522.5022.67622.376M10*1.259.319.389.44No.12-28 4.99 5.04SM1/8 -40M7.0*1.06.00 6.153 5.917M24*1.023.0023.15322.917M12*1.7511.0411.1211.211/4 -28 5.85 5.90SM1/8 -44M8.0*1.256.80 6.912 6.647M25*2.023.0023.21022.835M12*1.2511.3111.3811.445/16 -247.367.41SM9/64 -40M9.0*1.257.807.9127.647M25*1.523.5023.67623.3763/8 -249.00SM11/64-40M10*1.58.508.6768.376M25*1.024.0024.15323.9177/16 -2010.48SM3/16 -32M11*1.59.509.6769.376M26*1.524.5024.67624.3761/2 -2012.07SM3/16 -28M12*1.7510.3010.44110.106M27*2.025.0025.21024.835SM7/32 -32M14*2.012.0012.21011.835M27*1.525.5025.67625.376SM15/64-28M16*2.014.0014.21013.835M27*1.026.0026.15325.917SM1/4 -40M18*2.515.5015.74415.294M28*2.026.0026.21025.835SM1/4 -28M20*2.517.5017.74417.294M28*1.526.5026.67626.376SM9/32 -28M22*2.519.5019.74419.294M28*1.027.0027.15326.917规格最⼤SM11/32-28M24*3.021.0021.25220.752M30*3.027.0027.25226.752(UNC)最⼤最⼩PS 1/16 - 28 6.50 6.632SM3/8 -28M27*3.024.0024.25223.752M30*2.028.0028.21027.835 (螺丝⽛外径)PS 1/8 - 288.508.637SM7/16 -28M30*3.526.5026.77126.211M30*1.528.5028.67628.376No.1-64(1.854) 1.55 1.582 1.425PS 1/4 - 1911.4011.549M30*1.029.0029.15328.917No.2-56(2.184) 1.80 1.871 1.695PS 3/8 - 1915.0015.054M32*2.030.0030.21029.835No.3-48(2.515) 2.10 2.146 1.941PS 1/2 - 1418.5018.773M32*1.530.5030.67630.376No.4-40(2.845) 2.30 2.385 2.157PS 3/4 - 1424.0024.259M33*3.030.0030.25229.752No.5-40(3.175) 2.60 2.697 2.487PS 1 - 1130.2030.471M33*2.031.0031.21030.835No.6-32(3.505) 2.80 2.895 2.642PS 1-1/4 - 1138.8039.132最⼤最⼩M33*1.531.5031.67631.376No.8-32(4.166) 3.40 3.530 3.302PS 1-1/2 - 1144.8045.025M1.0*0.20.800.8210.783M35*1.533.5033.67633.376No.10-24(4.826) 3.90 3.962 3.683PS 2 - 1156.5056.836M1.1*0.20.900.9210.883M36*3.033.0033.25232.752No.12-24(5.486) 4.50 4.597 4.344M1.2*0.2 1.00 1.0210.983M36*2.034.0034.21033.8351/4 - 20 5.10 5.257 4.979M1.4*0.2 1.20 1.221 1.183M36*1.534.5034.67634.3765/16 - 18 6.60 6.7316.401M1.6*0.2 1.40 1.421 1.3833/8 - 168.008.1537.798M1.7*0.2 1.45 1.500 1.4607/16 - 149.409.5509.144M1.8*0.2 1.60 1.621 1.5831/2 - 1310.8011.02310.592使⽤绞⼑时不⽤绞⼑时M2.0*0.25 1.75 1.785 1.7299/16 - 1212.2012.44611.989PT 1/16 -28 6.10 6.20 6.244 6.384M2.2*0.25 1.95 1.985 1.929规格5/8 - 1113.6012.86813.386PT 1/8 -288.108.208.4298.388M2.3*0.25 2.05 2.061 2.001(UNF)最⼤最⼩3/4 - 1016.5018.84016.307PT 1/4 -1910.7011.0010.96211.174M2.5*0.35 2.20 2.221 2.1217/8 - 919.5019.76119.177PT 3/8 -1914.2014.5014.44814.658M2.6*0.35 2.20 2.246 2.186No.0-80(1.524) 1.25 1.305 1.182 1 - 822.2022.60621.971PT 1/2 -1417.6018.0017.97918.263M3.0*0.35 2.70 2.721 2.621No.1-72(1.854) 1.55 1.612 1.4741-1/8 - 725.0025.34924.638PT 3/4 -1423.0023.5023.37823.663M3.5*0.35 3.20 3.221 3.121No.2-64(2.184) 1.85 1.912 1.7561-1/4 - 728.2028.52427.813PT 1 -1129.0029.5029.45929.822M4.0*0.5 3.50 3.599 3.459No.3-56(2.515) 2.10 2.197 2.0251-3/8 - 630.8031.11530.353PT 1-1/4 -1137.5038.0037.97638.339M4.5*0.5 4.00 4.099 3.959No.4-48(2.845) 2.40 2.458 2.2711-1/2 - 634.0034.29033.528PT 1-1/2 -1143.4044.0043.86944.232M5.0*0.5 4.50 4.599 4.459No.5-44(3.175) 2.70 2.740 2.5511-3/4 - 539.5039.82738.964PT 2 -1154.9055.5055.41255.844M5.5*0.55.00 5.099 4.959No.6-40(3.505) 2.90 3.022 2.820 2 - 4-1/245.2045.59344.679M6.0*0.755.30 5.378 5.188No.8-36(4.166) 3.50 3.606 3.404M6.0*0.55.50 5.550 5.400No.10-32(4.826) 4.10 4.165 3.963M7.0*0.756.30 6.378 6.188No.12-28(5.846) 4.60 4.724 4.496M7.0*0.56.50 6.550 6.4001/4 - 28 5.50 5.588 5.360M8.0*1.07.007.153 6.9175/16 - 24 6.907.035 6.782规格M8.0*0.757.307.3787.1883/8 - 248.508.6368.382(UNEF)最⼤最⼩使⽤绞⼑时不⽤绞⼑时M8.0*0.57.507.5207.4007/16 - 209.9010.0339.729No.12 - 32 4.70 4.826 4.6231/16 - 27 6.10 6.25M9.0*1.08.008.1537.9171/2 - 2011.5011.60711.3291/4 - 32 5.60 5.690 5.4861/8 -278.338.43M9.0*0.758.308.3788.1889/16 - 1812.9013.08112.7515/16 - 327.107.2647.0871/4 -1810.7211.13M10*1.258.808.9128.4675/8 - 1814.5014.68114.3513/8 - 328.708.8658.6613/8 -1814.2714.27M10*1.09.009.1538.9173/4 - 1617.5017.67817.3237/16 - 2810.2010.33810.1351/2 -1417.4817.86M10*0.759.309.3789.1887/8 - 1420.5020.67520.2701/2 - 2811.8011.93811.7093/4 -1422.6323.01M10*0.59.509.5209.400 1 - 1223.2023.57123.1149/16 - 2413.2013.38613.132 1 -11-1/228.5828.98M11*1.010.0010.1539.9171-1/8 - 1226.5026.74626.2895/8 - 2414.8014.98614.7321-1/4 -11-1/237.3137.69M11*0.7510.3010.37810.1881-1/4 - 1229.5029.92129.4643/4 - 2017.8017.95817.6781-1/2 -11-1/243.6644.04M12*1.510.5010.67610.3761-3/8 - 1232.8033.09632.6397/8 - 2021.0021.13320.853 2 -11-1/255.5855.96M12*1.2510.8010.91210.6471-1/2 - 1236.036.27135.814 1 - 2024.0024.30824.028螺纹攻⽛钻孔径和滚造径对照表本表所推选之钻头孔径，是针对攻⽛加⼯时，能够很容易的了解钻孔直径；⽽依据市售之标准钻头所选定的。
最全的螺纹孔径对照表
最大最小最大最小G4-G6G7-G8G9M1.0*0.250.750.7850.729M12*1.011.0011.15310.917M1.0*0.250.860.88M1.1*0.250.850.8850.829M12*0.511.5011.52011.400M1.1*0.250.960.98最大M1.2*0.250.950.9850.929M14*1.512.5012.67612.376M1.2*0.25 1.06 1.08G 1/167.72 6.84M1.4*0.3 1.10 1.142 1.075M14*1.013.0013.15312.917M1.4*0.3 1.24 1.25G(PF)1/89.738.85M1.6*0.35 1.25 1.321 1.221M15*1.513.5013.67613.376M1.6*0.35 1.41 1.431/413.1611.89M1.7*0.35 1.35 1.421 1.321M15*1.014.0014.15313.917M1.7*0.35 1.51 1.533/816.6615.40M1.8*0.35 1.45 1.521 1.421M16*1.514.5014.67614.376M1.8*0.35 1.61 1.631/220.9619.17M2.0*0.4 1.60 1.679 1.567M16*1.015.0015.15314.917M2*0.4 1.78 1.805/822.9121.13M2.2*0.45 1.75 1.838 1.713M17*1.515.5015.67615.376M2.2*0.45 1.95 1.983/426.4424.66M2.3*0.4 1.90 1.979 1.867M17*1.016.0016.15315.917M2.3*0.4 2.08 2.107/830.2028.42M2.5*0.45 2.10 2.138 2.013M18*2.016.0016.21015.835M2.5*0.45 2.25 2.28133.2530.93M2.6*0.45 2.20 2.238 2.113M18*1.516.5016.67616.376M2.6*0.45 2.35 2.38 1.12537.9035.58M3.0*0.5 2.50 2.599 2.459M18*1.017.0017.15316.917M3.0*0.5 2.73 2.75 1.2541.9139.59M3.0*0.6 2.40 2.440 2.280M20*2.018.0018.21017.835M3.5*0.6 3.17 3.20 1.37544.3242.01M3.5*0.6 2.90 3.010 2.850M20*1.518.5018.67618.376M4.0*0.7 3.62 3.65 3.69 1.547.8049.02M4.0*0.7 3.30 3.422 3.242M20*1.019.0019.15318.917M5.0*0.8 4.56 4.60 4.64 1.62551.9150.79M4.0*0.75 3.25 3.326 3.106M22*2.020.0020.21019.835M6.0*1.0 5.45 5.50 5.55 1.7553.7556.66M4.5*0.75 3.80 3.878 3.688M22*1.520.5020.67620.376M7.0*1.0 6.45 6.50 6.55259.61M5.0*0.8 4.20 4.334 4.134M22*1.021.0021.15320.917M8.0*1.257.317.387.44M5.0*0.9 4.10 4.170 3.930M24*2.022.0022.21021.835M10*1.59.189.259.32M6.0*1.0 5.00 5.153 4.917M24*1.522.5022.67622.376M10*1.259.319.389.44M7.0*1.0 6.00 6.153 5.917M24*1.023.0023.15322.917M12*1.7511.0411.1211.21M8.0*1.25 6.80 6.912 6.647M25*2.023.0023.21022.835M12*1.2511.3111.3811.44M9.0*1.257.807.9127.647M25*1.523.5023.67623.376最大M10*1.58.508.6768.376M25*1.024.0024.15323.917PS 1/16 - 28 6.50 6.632M11*1.59.509.6769.376M26*1.524.5024.67624.376PS 1/8 - 288.508.637M12*1.7510.3010.44110.106M27*2.025.0025.21024.835PS 1/4 - 1911.4011.549M14*2.012.0012.21011.835M27*1.525.5025.67625.376PS 3/8 - 1915.0015.054M16*2.014.0014.21013.835M27*1.026.0026.15325.917PS 1/2 - 1418.5018.773M18*2.515.5015.74415.294M28*2.026.0026.21025.835PS 3/4 - 1424.0024.259M20*2.517.5017.74417.294M28*1.526.5026.67626.376PS 1 - 1130.2030.471M22*2.519.5019.74419.294M28*1.027.0027.15326.917规格PS 1-1/4 - 1138.8039.132M24*3.021.0021.25220.752M30*3.027.0027.25226.752(UNC)最大最小PS 1-1/2 - 1144.8045.025M27*3.024.0024.25223.752M30*2.028.0028.21027.835 (螺丝牙外径)PS 2 - 1156.5056.836M30*3.526.5026.77126.211M30*1.528.5028.67628.376No.1-64(1.854) 1.55 1.582 1.425M30*1.029.0029.15328.917No.2-56(2.184) 1.80 1.871 1.695M32*2.030.0030.21029.835No.3-48(2.515) 2.10 2.146 1.941M32*1.530.5030.67630.376No.4-40(2.845) 2.30 2.385 2.157M33*3.030.0030.25229.752No.5-40(3.175) 2.60 2.697 2.487M33*2.031.0031.21030.835No.6-32(3.505) 2.80 2.895 2.642最大最小M33*1.531.5031.67631.376No.8-32(4.166) 3.40 3.530 3.302M1.0*0.20.800.8210.783M35*1.533.5033.67633.376No.10-24(4.826) 3.90 3.962 3.683M1.1*0.20.900.9210.883M36*3.033.0033.25232.752No.12-24(5.486) 4.50 4.597 4.344PT 1/16 -28 6.10 6.20 6.244 6.384M1.2*0.2 1.00 1.0210.983M36*2.034.0034.21033.8351/4 - 20 5.10 5.257 4.979PT 1/8 -288.108.208.4298.388M1.4*0.2 1.20 1.221 1.183M36*1.534.5034.67634.3765/16 - 18 6.60 6.731 6.401PT 1/4 -1910.7011.0010.96211.174M1.6*0.2 1.40 1.421 1.3833/8 - 168.008.1537.798PT 3/8 -1914.2014.5014.44814.658M1.7*0.2 1.45 1.500 1.4607/16 - 149.409.5509.144PT 1/2 -1417.6018.0017.97918.263M1.8*0.2 1.60 1.621 1.5831/2 - 1310.8011.02310.592PT 3/4 -1423.0023.5023.37823.663M2.0*0.25 1.75 1.785 1.7299/16 - 1212.2012.44611.989PT 1 -1129.0029.5029.45929.822M2.2*0.25 1.95 1.985 1.929规格5/8 - 1113.6012.86813.386PT 1-1/4 -1137.5038.0037.97638.339M2.3*0.25 2.05 2.061 2.001(UNF)最大最小3/4 - 1016.5018.84016.307PT 1-1/2 -1143.4044.0043.86944.232M2.5*0.35 2.20 2.221 2.1217/8 - 919.5019.76119.177PT 2 -1154.9055.5055.41255.844M2.6*0.35 2.20 2.246 2.186No.0-80(1.524) 1.25 1.305 1.182 1 - 822.2022.60621.971M3.0*0.35 2.70 2.721 2.621No.1-72(1.854) 1.55 1.612 1.4741-1/8 - 725.0025.34924.638M3.5*0.35 3.20 3.221 3.121No.2-64(2.184) 1.85 1.912 1.7561-1/4 - 728.2028.52427.813M4.0*0.5 3.50 3.599 3.459No.3-56(2.515) 2.10 2.197 2.0251-3/8 - 630.8031.11530.353M4.5*0.5 4.00 4.099 3.959No.4-48(2.845) 2.40 2.458 2.2711-1/2 - 634.0034.29033.528M5.0*0.5 4.50 4.599 4.459No.5-44(3.175) 2.70 2.740 2.5511-3/4 - 539.5039.82738.964M5.5*0.5 5.00 5.099 4.959No.6-40(3.505) 2.90 3.022 2.820 2 - 4-1/245.2045.59344.679使用绞刀时不用绞刀时M6.0*0.75 5.30 5.378 5.188No.8-36(4.166) 3.50 3.606 3.4041/16 - 27 6.10 6.25M6.0*0.5 5.50 5.550 5.400No.10-32(4.826) 4.10 4.165 3.9631/8 -278.338.43M7.0*0.75 6.30 6.378 6.188No.12-28(5.846) 4.60 4.724 4.4961/4 -1810.7211.13M7.0*0.5 6.50 6.550 6.4001/4 - 28 5.50 5.588 5.3603/8 -1814.2714.27M8.0*1.07.007.153 6.9175/16 - 24 6.907.035 6.782规格1/2 -1417.4817.86M8.0*0.757.307.3787.1883/8 - 248.508.6368.382(UNEF)最大最小3/4 -1422.6323.01M8.0*0.57.507.5207.4007/16 - 209.9010.0339.729No.12 - 32 4.70 4.826 4.623 1 -11-1/228.5828.98M9.0*1.08.008.1537.9171/2 - 2011.5011.60711.3291/4 - 32 5.60 5.690 5.4861-1/4 -11-1/237.3137.69M9.0*0.758.308.3788.1889/16 - 1812.9013.08112.7515/16 - 327.107.2647.0871-1/2 -11-1/243.6644.04M10*1.258.808.9128.4675/8 - 1814.5014.68114.3513/8 - 328.708.8658.661 2 -11-1/255.5855.96M10*1.09.009.1538.9173/4 - 1617.5017.67817.3237/16 - 2810.2010.33810.135M10*0.759.309.3789.1887/8 - 1420.5020.67520.2701/2 - 2811.8011.93811.709M10*0.59.509.5209.400 1 - 1223.2023.57123.1149/16 - 2413.2013.38613.132M11*1.010.0010.1539.9171-1/8 - 1226.5026.74626.2895/8 - 2414.8014.98614.732M11*0.7510.3010.37810.1881-1/4 - 1229.5029.92129.4643/4 - 2017.8017.95817.678M12*1.510.5010.67610.3761-3/8 - 1232.8033.09632.6397/8 - 2021.0021.13320.853M12*1.2510.8010.91210.6471-1/2 - 1236.036.27135.8141 - 2024.0024.30824.028规 格使用绞刀时不用绞刀时有效牙部之长度(最小)中之母螺牙内径标准长度(最小)中之母螺牙内径螺 纹 攻 牙 钻 孔 径 和 滚 造 径 对 照 表英制平行管用螺紋PF(G)(單位：mm)大 径钻孔径规格公 制 细 螺 纹规格标准径2级牙钻孔径标准径2级牙钻孔径美 制 特 细 螺 纹规 格 (螺丝牙外径)美 制 细 螺 纹美 制 管 螺 纹钻 孔 径标准径美 制 粗 螺 纹标准径2级牙钻孔径公 制 粗 螺 纹公 制 迫 牙 丝 攻 钻 孔 径规 格精 度 等 级公 制 细 螺 纹2级牙钻孔径标准径规格14.9518.6320.5924.12最小6.568.5711.4541.3745.4949.6751.4327.8830.2934.9438.958.49511.341英 制 管 螺 纹钻孔径最小规格标准径N P T14.84623.97530.11138.77218.48944.66556.476英 制 管 螺 纹规格18.2623.4229.366.3511.1314.68N P S 44.4556.3638.108.7457.306.490注：迫牙丝攻之钻孔径，在上表所列之数值，由于被加工 材料之材质、硬度、形状、尺寸等之影响，多少会有所变动，因此于参考上表之同时，亦请增减若干。
各种螺纹详细参数和钻孔直径对照表
螺纹下孔径表公制粗牙螺纹JIS B 0209-1982(單位：mm)註(1)M1.4以下等級：5H、M1.6以上等級：6H(2)基於JIS B 0209-1982標準螺纹下孔径表公制細牙螺纹JIS B 0211-1982(單位：mm)螺纹下孔径表公制細牙螺纹JIS B 0211-1982(單位：mm)註(1)等級：6H(2)基於JIS B 0211-1982標準螺纹下孔径表美制粗牙螺纹(單位：mm)螺纹下孔径表美制細牙螺纹(單位：mm)螺纹下孔径表英制粗牙螺纹(單位：mm)螺纹下孔径表英制管用螺纹(單位：mm)螺纹下孔径表英制平行管用螺纹PF(G)(單位：mm)使用粗線左側數據作為攻絲前的底孔直径，可加工符合JIS B 0202的A級或B級的內螺纹小径。
美制斜行管用螺纹 (NPT?NPS)(單位：mm)上述钻头直径來源於美制管用螺纹ANSI／ASME B1.20.1—1983 Pipe Threads, General Purpose (Inch)標準。
螺纹下孔径表美制管用耐密斜行螺纹(NPTF?NPSF)(單位：mm)上述钻头直径來源於美制管用耐密斜行螺纹ANSI B1.20.3—1957 Dryseal Pipe Threads (Inch)標準。
螺纹下孔径表(無屑絲攻用)公制螺纹(NRT)(單位：mm)螺纹下孔径表(無屑絲攻用)美制粗牙螺纹(NRT)(單位：mm)螺纹下孔径表(無屑絲攻用)美制細牙螺纹(NRT)(單位：mm)英制管用平行螺纹(NRT)(單位：mm)螺纹下孔径表(無屑絲攻用)公制螺纹(HRT)(單位：mm)螺纹下孔径表(護套螺纹用)公制粗牙螺纹 HL-NRT(單位：mm)螺纹下孔径表(護套螺纹用)公制粗牙螺纹(單位：mm)公制細牙螺纹(單位：mm)螺纹下孔径表(護套螺纹用)美制粗牙螺纹(單位：mm)美制細牙螺纹(單位：mm)。
螺纹规格对照表
螺纹规格对照表螺纹底孔径公制粗牙螺纹 JIS B 0209-1982(单位:mm)(注1)(注2) 2级崁合度区分:中(注1)(注2) 崁合度区分:中2级内螺纹小径螺纹尺寸钻头直径下孔径最小直径最大直径M 1 × 0.25 0.75 0.78 (80%) 0.729 0.785 1.1 × 0.25 0.85 0.88 (80%) 0.829 0.885 1.2 × 0.25 0.95 0.98 (80%) 0.929 0.985 1.4 × 0.3 1.1 1.14 (80%) 1.075 1.142 1.6 × 0.35 1.25 1.32 (75%) 1.221 1.321 1.8 × 0.351.45 1.52 (75%) 1.421 1.521 2 × 0.4 1.6 1.65 (80%) 1.567 1.6792.2 × 0.45 1.75 1.83 (75%) 1.713 1.838 2.5 × 0.45 2.1 2.13 (75%) 2.013 2.1383 × 0.5 2.5 2.59 (75%) 2.459 2.599 3.5 × 0.6 2.9 3.01 (75%) 2.8503.010 4 × 0.7 3.3 3.39 (80%) 3.242 3.4224.5 × 0.75 3.8 3.85 (80%)3.688 3.878 5 × 0.84.2 4.31 (80%) 4.134 4.334 6 × 1 55.13 (80%)4.9175.153 7 × 1 66.13 (80%) 5.917 6.153 8 × 1.25 6.8 6.85 (85%)6.647 6.912 9 × 1.257.8 7.85 (85%) 7.647 7.912 10 × 1.58.5 8.62 (85%) 8.376 8.676 11 × 1.59.5 9.62 (85%) 9.376 9.676 12 × 1.75 10.3 10.40 (85%) 10.106 10.441 14 × 2 12 12.2 (85%) 11.835 12.210 16 × 2 14 14.2 (85%) 13.835 14.210 18 × 2.5 15.5 15.7 (85%) 15.294 15.744 20 × 2.5 17.5 17.7 (85%) 17.294 17.744 22 × 2.5 19.5 19.2 (85%) 19.294 19.744 24 × 3 21 21.2 (85%) 20.752 21.252 27 × 3 24 24.2 (85%) 23.752 24.252 30 × 3.5 26.5 26.6 (90%) 26.211 26.771 33 × 3.5 29.5 29.6 (90%) 29.211 29.771 36 × 4 32 32.1 (90%) 31.670 32.270 39 × 4 35 35.1 (90%) 34.67035.270 42 × 4.5 37.5 37.6 (90%) 37.129 37.799 45 × 4.5 40.5 40.6 (90%) 40.129 40.799 48 × 5 43 43.1 (90%) 42.587 43.297注(1)M1.4以下等级:5H、M1.6以上等级:6H(2)基于JIS B 0209-1982标准螺纹下孔径表公制细牙螺纹 JIS B 0211-1982(单位:mm) (注1)(注2) 2级崁合度区分:中(注1)(注2) 崁合度区分:中2级内螺纹小径螺纹尺寸钻头直径下孔径最小直径最大直径M 2.5 × 0.35 2.2 2.22 (75%) 2.121 2.221 3 × 0.35 2.7 2.72 (75%) 2.621 2.721 3.5 × 0.35 3.23.22 (75%) 3.121 3.221 4 × 0.5 3.5 3.59 (75%) 3.459 3.5994.5 × 0.5 44.09 (75%) 3.959 4.099 5 × 0.5 4.5 4.59 (75%) 4.459 4.5995.5 × 0.5 55.09 (75%) 4.959 5.099 6 × 0.75 5.3 5.35 (80%) 5.188 5.378 7 × 0.756.3 6.35 (80%) 6.188 6.378 8 × 1 77.13 (80%) 6.917 7.153 8 × 0.75 7.37.35 (80%) 7.188 7.378 9 × 1 8 8.13 (80%) 7.917 8.153 9 × 0.75 8.38.35 (80%) 8.188 8.378 10 × 1.25 8.8 8.85 (85%) 8.647 8.912 10 × 1 99.13 (80%) 8.917 9.153 10 × 0.75 9.3 9.35 (80%) 9.188 9.378 11 × 1 1010.13 (80%) 9.917 10.153 11 × 0.75 10.3 10.35 (80%) 10.188 10.378 12 × 1.5 10.5 10.62 (85%) 10.376 10.676 12 × 1.25 10.8 10.85 (85%) 10.647 10.912 12 × 1 11 11.13 (80%) 10.917 11.153 14 × 1.5 12.5 12.62 (85%) 12.376 12.676 14 × 1 13 13.13 (80%) 12.917 13.153 15 × 1.5 13.5 13.62 (85%) 13.376 13.676 15 × 1 14 14.13 (80%) 13.917 14.153 16 × 1.5 14.514.62 (85%) 14.376 14.676 16 × 1 15 15.13 (80%) 14.917 15.153 17 × 1.515.5 15.62 (85%) 15.376 15.676 17 × 1 16 16.13 (80%) 15.917 16.153 18 × 2 16 16.2 (85%) 15.835 16.210 18 × 1.5 16.5 16.62 (85%) 16.37616.676 18 × 1 17 17.13 (80%) 16.917 17.153 20 × 2 18 18.2 (85%) 17.835 18.210 20 × 1.5 18.5 18.62 (85%) 18.376 18.676 20 × 1 19 19.13 (80%) 18.917 19.153 22 × 2 20 20.2 (85%) 19.835 20.210 22 × 1.5 20.5 20.62 (85%) 20.376 20.676 22 × 1 21 21.13 (80%) 20.917 21.153 24 × 2 22 22.2 (85%) 21.835 22.210 24 × 1.5 22.5 22.62 (85%) 22.376 22.676 24 × 1 23 23.13 (80%) 22.917 23.153 25 × 2 23 23.2 (85%) 22.835 23.21025 × 1.5 23.5 23.62 (85%) 23.376 23.676 25 × 1 24 24.13 (80%)23.917 24.153螺纹下孔径表公制细牙螺纹 JIS B 0211-1982(单位:mm)(注1)(注2) 2级崁合度区分:中(注1)(注2) 崁合度区分:中2级内螺纹小径螺纹尺寸钻头直径下孔径最小直径最大直径M 26 × 1.5 24.5 24.62 (85%) 24.376 24.676 27 × 2 25 25.2 (85%)24.835 25.210 27 × 1.5 25.5 25.62 (85%) 25.376 25.676 27 × 1 26 26.13 (80%) 25.917 26.153 28 × 2 26 26.2 (85%) 25.835 26.210 28 × 1.5 26.526.62 (85%) 26.376 26.676 28 × 1 27 27.13 (80%) 26.917 27.153 30 × 327 27.2 (85%) 26.752 27.252 30 × 2 28 28.2 (85%) 27.835 28.210 30 × 1.5 28.5 28.62 (85%) 28.376 28.676 30 × 1 29 29.13 (80%) 28.917 29.153 32 × 2 30 30.2 (85%) 29.835 30.210 32 × 1.5 30.5 30.62 (85%) 30.37630.676 33 × 3 30 30.2 (85%) 29.752 30.252 33 × 2 31 31.2 (85%) 30.83531.210 33 × 1.5 31.5 31.62 (85%) 31.376 31.676 35 × 1.5 33.5 33.62 (85%) 33.376 33.676 36 × 3 33 33.2 (85%) 32.752 33.252 36 × 2 34 34.2 (85%) 33.835 34.210 36 × 1.5 34.5 34.62 (85%) 34.376 34.676 38 × 1.536.5 36.62 (85%) 36.376 36.676 39 × 3 36 36.2 (85%) 35.752 36.252 39 × 2 37 37.2 (85%) 36.835 37.210 39 × 1.5 37.5 37.62 (85%) 37.376 37.676 40 × 3 37 37.2 (85%) 36.752 37.252 40 × 2 38 38.2 (85%) 37.835 38.210 40 × 1.5 38.5 38.62 (85%) 38.376 38.676 42 × 4 38 38.1 (90%) 37.670 38.270 42 × 3 39 39.2 (85%) 38.752 39.252 42 × 2 40 40.2 (85%) 39.835 40.210 42 × 1.5 40.5 40.62 (85%) 40.376 40.676 45 × 4 41 41.1 (90%) 40.670 41.270 45 × 3 42 42.2 (85%) 41.752 42.252 45 × 2 43 43.2 (85%) 42.835 43.210 45 × 1.5 43.5 43.62 (85%) 43.376 43.676 48 × 4 44 44.1 (90%) 43.670 44.27048 × 3 45 45.2 (85%) 44.752 45.25246.2 (85%) 48 × 2 46 45.835 46.21048 × 1.5 46.5 46.62 (85%) 46.376 46.67650 × 3 47 47.2 (85%) 46.752 47.25250 × 2 48 48.2 (85%) 47.835 48.21050 × 1.5 48.5 48.62 (85%) 48.376 48.676 注(1)等级:6H(2)基于JIS B 0211-1982标准螺纹下孔径表美制粗牙螺纹 (单位:mm)内螺纹小径 2B级螺纹螺纹尺寸钻头直径下孔径最小直径最大直径NO.1 -64UNC 1.55 1.57 (65%) 1.425 1.5822 -56 1.8 1.86 (65%) 1.695 1.8713 -48 2.1 2.14 (65%) 1.941 2.1464 -40 2.3 2.36 (70%) 2.157 2.3855 -40 2.6 2.69 (70%) 2.487 2.6976 -32 2.8 2.86 (75%) 2.642 2.8958 -32 3.4 3.52 (75%) 3.302 3.53010 -24 3.9 3.91 (80%) 3.683 3.96212 -24 4.5 4.57 (80%) 4.344 4.5971/4 -20 5.1 5.25 (80%) 4.979 5.257 5/16 -18 6.6 6.72 (80%) 6.4016.7313/8 -16 8 8.15 (80%) 7.798 8.153 7/16 -14 9.4 9.5(80%) 9.144 9.550 1/2 -13 10.8 11.0 (80%) 10.592 11.0239/16 -12 12.2 12.3 (85%) 11.989 12.4465/8 -11 13.6 13.8 (85%) 13.386 13.8683/4 -10 16.5 16.8 (80%) 16.307 16.8407/8 - 9 19.5 19.6 (85%) 19.177 19.7611 - 8 22.2 22.5 (85%) 21.971 22.6061 1/8 - 7 25 25.2 (85%) 24.638 25.3491 1/4 - 7 28.2 28.4 (85%) 27.813 28.5241 3/8 - 6 30.8 31.0 (85%) 30.353 31.1151 1/2 - 6 34 34.2 (85%) 33.528 34.2901 3/4 - 5 39.5 39.8 (85%) 38.964 39.8272 - 4 45.2 45.3 (90%) 44.679 45.593螺纹下孔径表美制细牙螺纹 (单位:mm)内螺纹小径 2B级螺纹螺纹尺寸钻头直径下孔径最小直径最大直径 NO. 0 1.25 1.30 (65%) 1.182 1.305 -80UNF1 -72 1.55 1.61 (65%) 1.474 1.6122 -64 1.85 1.90 (65%) 1.756 1.9123 -56 2.1 2.17 (70%) 2.025 2.1974 -48 2.4 2.44 (70%) 2.271 2.4585 -44 2.7 2.74 (70%) 2.551 2.7406 -40 2.9 3.02 (70%) 2.820 3.0228 -36 3.5 3.59 (75%) 3.404 3.60610 -32 4.1 4.14 (80%) 3.963 4.16512 -28 4.6 4.70 (80%) 4.496 4.7241/4 -28 5.5 5.56 (80%) 5.360 5.588 5/16 -24 6.9 7.02 (80%) 6.782 7.0353/8 -24 8.5 8.61 (80%) 8.382 8.6367/16 -20 9.9 10.01 (80%) 9.729 10.0331/2 -20 11.5 11.60 (80%) 11.329 11.6079/16 -18 12.9 13.07 (80%) 12.751 13.0815/8 -18 14.5 14.65 (80%) 14.351 14.6813/4 -16 17.5 17.59 (85%) 17.323 17.6787/8 -14 20.5 20.6 (85%) 20.270 20.6751 -12 23.2 23.5 (85%) 23.114 23.5711 1/8 -12 26.5 26.7 (80%) 26.289 26.7461 1/4 -12 29.5 29.9 (80%) 29.464 29.9211 3/8 -12 32.8 33.0 (85%) 32.639 33.0961 1/2 -12 36 36.2 (85%) 35.814 36.271螺纹下孔径表缝纫机螺纹(SM) (单位:mm)2级内螺纹小径 2B级螺纹螺纹尺寸钻头直径下孔径最小直径最大直径 SM 1/16 - 1.25 1.28 (75%) 1.211 1.281 805/64 - 64 1.55 1.57 (80%) 1.513 1.593 3/32 -100 2.10 2.15 (70%)2.081 2.156 3/32 - 56 1.85 1.91 (80%) 1.841 1.936 1/8 - 44 2.50 2.58 (80%) 2.485 2.605 1/8 - 40 2.45 2.52 (80%) 2.421 2.551 9/64 - 40 2.852.91 (80%) 2.818 2.948 11/64 - 403.65 3.71 (80%) 3.612 3.742 3/16 - 323.90 3.94 (80%) 3.820 3.980 3/16 - 28 3.70 3.82 (80%) 3.684 3.844 7/32 - 324.70 4.73 (80%) 4.614 4.774 15/64 - 28 4.905.01 (80%) 4.875 5.0551/4 - 40 5.60 5.69 (80%) 5.596 5.726 1/4 - 28 5.30 5.41 (80%) 5.2725.452 缝纫机螺纹(SM) (单位:mm)2级内螺纹小径 2B 级螺纹螺纹尺寸钻头直径下孔径最小直径最大直径 SM 1/4 - 5.10 5.25 (80%) 5.086 5.266 249/32 - 28 6.10 6.20 (80%) 6.066 6.2569/32 - 20 5.70 5.82 (80%) 5.634 5.8245/16 - 28 6.90 6.00 (80%) 6.860 7.0505/16 - 24 6.70 6.84 (80%) 6.674 6.8645/16 - 18 6.30 6.38 (85%) 6.254 6.4443/8 - 28 8.50 8.58 (80%) 8.447 8.6373/8 - 18 7.90 7.97 (85%) 7.843 8.0537/16 - 28 10.10 10.17 (80%) 10.034 10.2247/16 - 16 9.30 9.36 (85%) 9.220 9.4401/2 - 28 11.70 11.76 (80%) 11.622 11.8121/2 - 20 11.30 11.38 (80%) 11.190 11.4101/2 - 12 10.30 10.36 (85%) 10.180 10.420 螺纹下孔径表英制粗牙螺纹 (单位:mm)、切削速度与切削液切削速度(m/min) 切削液加工材料高速同步丝水溶性直槽丝攻螺旋丝攻先端丝攻钨钢丝攻无屑丝攻管用丝攻油性半干式干式攻 (乳化液)低碳素钢 C0.25,以下 8~13 8~13 15~25 , 8~13 27~32 3~6 ◎ ? ? ?C0.25,中碳素钢7~12 7~12 10~15 , 7~10 27~32 3~6 ◎ ? ? ? 0.45,高碳素钢 C0.45,以上6~9 6~9 8~13 , 5~8 22~27 2~5 ◎ ? ? ? 合金钢SCM 7~12 7~12 10~15 , 5~8 22~27 2~5 ◎ ? ? ?3~5 3~5 4~6 调质钢25,45HRC , , , 2~5 ◎ ? , , (4~8) (4~8) (6~10) 不锈钢 SUS 4~7 5~8 8~13 , 5~10 , 3~6 ◎ ? , ,SUS630 不锈钢3~5 3~5 4~6 , , , 2~5 ◎ , , , SUS631工具钢SKD 6~9 6~9 7~10 , , , 2~5 ◎ , , , 铸钢 SC 6~11 6~1110~15 , , 17~22 2~5 ◎ ? , , 铸铁FC 10~15 , , 10~20 , , 2~5 ◎ ? ? ? 球铸铁FCD 7~12 7~12 10~20 10~20 , , 4~8 ◎ ? ? ,铜 Cu 6~9 6~11 7~12 10~20 7~12 27~32 2~5 ? ? , , 黄铜‧ Bs‧BsC 10~15 10~20 15~25 15~25 7~12 27~32 5~10 ? ? ? ? 黄铜铸件青铜‧ PB‧PBC 6~11 6~11 10~20 10~20 7~12 , 6~11 ? ? , , 青铜铸件变形AL 10~20 10~20 10~25 , 10~20 100~300 5~10 ◎ ? ? , 铝合金铝合金 AC‧ADC 10~15 10~15 15~20 10~20 10~15 80~300 10~15 ◎ ? ? , 铸件镁合金MC 7~12 7~12 10~15 10~20 , , 10~15 ◎ ? ? , 锌铸件 ZDC7~12 7~12 10~15 10~20 7~12 27~100 10~15 ◎ ? ? ,Thermo Setting 热硬塑料 10~20 , , 15~25 , , 5~10 , ? ? ? Plastic 热可塑性Thermo 10~20 10~15 10~20 10~20 , 27~32 5~10 , ? ? ? 塑料Plastic。