公制螺纹尺寸表

螺纹底孔径

公制粗牙螺纹 JIS B 0209-1982(单位：mm)

螺纹尺寸 钻头直径

崁合度区分：中(注1)2级(注2)

下孔径

崁合度区分：中(注1)2级(注2)

内螺纹小径

最小直径 最大直径

M 1 0.78 (80%)

0.88 (80%)

0.98 (80%)

1.14 (80%)

1.32 (75%)

1.52 (75%)

2 1.65 (80%)

1.83 (75%)

2.13 (75%)

3 2.59 (75%)

3.01 (75%)

4 3.39 (80%)

3.85 (80%)

5 4.31 (80%)

6 × 1 5 5.13 (80%)

7 × 1 6 6.13 (80%)

8 6.85 (85%)

9 7.85 (85%)

10 8.62 (85%)

11 9.62 (85%)

12 10.40 (85%)

14 × 2 12 12.2 (85%)

16 × 2 14 14.2 (85%)

18 15.7 (85%)

20 17.7 (85%)

22 19.2 (85%)

24 × 3 21 21.2 (85%)

27 × 3 24 24.2 (85%)

30 26.6 (90%)

33 29.6 (90%)

36 × 4 32 32.1 (90%)

39 × 4 35 35.1 (90%)

37.6 (90%)

40.6 (90%)

公称直径×螺距 螺纹精度等级 大径 中径 小径

攻丝前钻头直径

最小 最大 最小 最大 最小

M3×

6H

M4×

M5×

M6×

M8×

M8×1

M10×

M10×1

M10×

M12×1

M12×

M12×

M14×1

M14×

M16×1

M16×

M18×1

M18×

M18×2

M20×1

M20×

M20×2

M22×1

M22×

M22×2

M24×1

M24×

M24×2

M27×1

M27×

M27×2

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*0.251.061.08G 1/167.726.84M1.4*0.31.101.1421.075M14*1.013.0013.15312.917M1.4*0.31.241.25G(PF)1/89.738.85M1.6*0.351.251.3211.221M15*1.513.5013.67613.376M1.6*0.351.411.431/413.1611.89M1.7*0.351.351.4211.321M15*1.014.0014.15313.917M1.7*0.351.511.533/816.6615.40M1.8*0.351.451.5211.421M16*1.514.5014.67614.376M1.8*0.351.611.631/220.9619.17M2.0*0.41.601.6791.567M16*1.015.0015.15314.917M2*0.41.781.805/822.9121.13M2.2*0.451.751.8381.713M17*1.515.5015.67615.376M2.2*0.451.951.983/426.4424.66M2.3*0.41.901.9791.867M17*1.016.0016.15315.917M2.3*0.42.082.107/830.2028.42M2.5*0.452.102.1382.013M18*2.016.0016.21015.835M2.5*0.452.252.28133.2530.93M2.6*0.452.202.2382.113M18*1.516.5016.67616.376M2.6*0.452.352.381.12537.9035.58M3.0*0.52.502.5992.459M18*1.017.0017.15316.917M3.0*0.52.732.751.2541.9139.59M3.0*0.62.402.4402.280M20*2.018.0018.21017.835M3.5*0.63.173.201.37544.3242.01M3.5*0.62.903.0102.850M20*1.518.5018.67618.376M4.0*0.73.623.653.691.547.8049.02M4.0*0.73.303.4223.242M20*1.019.0019.15318.917M5.0*0.84.564.604.641.62551.9150.79M4.0*0.753.253.3263.106M22*2.020.0020.21019.835M6.0*1.05.455.505.551.7553.7556.66M4.5*0.753.803.8783.688M22*1.520.5020.67620.376M7.0*1.06.456.506.55259.61M5.0*0.84.204.3344.134M22*1.021.0021.15320.917M8.0*1.257.317.387.44M5.0*0.94.104.1703.930M24*2.022.0022.21021.835M10*1.59.189.259.32M6.0*1.05.005.1534.917M24*1.522.5022.67622.376M10*1.259.319.389.44M7.0*1.06.006.1535.917M24*1.023.0023.15322.917M12*1.7511.0411.1211.21M8.0*1.256.806.9126.647M25*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 - 286.506.632M11*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)1.551.5821.425M30*1.029.0029.15328.917No.2-56(2.184)1.801.8711.695M32*2.030.0030.21029.835No.3-48(2.515)2.102.1461.941M32*1.530.5030.67630.376No.4-40(2.845)2.302.3852.157M33*3.030.0030.25229.752No.5-40(3.175)2.602.6972.487M33*2.031.0031.21030.835No.6-32(3.505)2.802.8952.642最大最小M33*1.531.5031.67631.376No.8-32(4.166)3.403.5303.302M1.0*0.20.800.8210.783M35*1.533.5033.67633.376No.10-24(4.826)3.903.9623.683M1.1*0.20.900.9210.883M36*3.033.0033.25232.752No.12-24(5.486)4.504.5974.344PT 1/16 -286.106.206.2446.384M1.2*0.21.001.0210.983M36*2.034.0034.21033.8351/4 - 205.105.2574.979PT 1/8 -288.108.208.4298.388M1.4*0.21.201.2211.183M36*1.534.5034.67634.3765/16 - 186.606.7316.401PT 1/4 -1910.7011.0010.96211.174M1.6*0.21.401.4211.3833/8 - 168.008.1537.798PT 3/8 -1914.2014.5014.44814.658M1.7*0.21.451.5001.4607/16 - 149.409.5509.144PT 1/2 -1417.6018.0017.97918.263M1.8*0.21.601.6211.5831/2 - 1310.8011.02310.592PT 3/4 -1423.0023.5023.37823.663M2.0*0.251.751.7851.7299/16 - 1212.2012.44611.989PT 1 -1129.0029.5029.45929.822M2.2*0.251.951.9851.929规格5/8 - 1113.6012.86813.386PT 1-1/4 -1137.5038.0037.97638.339M2.3*0.252.052.0612.001(UNF)最大最小3/4 - 1016.5018.84016.307PT 1-1/2 -1143.4044.0043.86944.232M2.5*0.352.202.2212.1217/8 - 919.5019.76119.177PT 2 -1154.9055.5055.41255.844M2.6*0.352.202.2462.186No.0-80(1.524)1.251.3051.1821 - 822.2022.60621.971M3.0*0.352.702.7212.621No.1-72(1.854)1.551.6121.4741-1/8 - 725.0025.34924.638M3.5*0.353.203.2213.121No.2-64(2.184)1.851.9121.7561-1/4 - 728.2028.52427.813M4.0*0.53.503.5993.459No.3-56(2.515)2.102.1972.0251-3/8 - 630.8031.11530.353M4.5*0.54.004.0993.959No.4-48(2.845)2.402.4582.2711-1/2 - 634.0034.29033.528M5.0*0.54.504.5994.459No.5-44(3.175)2.702.7402.5511-3/4 - 539.5039.82738.964M5.5*0.55.005.0994.959No.6-40(3.505)2.903.0222.8202 - 4-1/245.2045.59344.679使用绞刀时不用绞刀时M6.0*0.755.305.3785.188No.8-36(4.166)3.503.6063.4041/16 - 276.106.25M6.0*0.55.505.5505.400No.10-32(4.826)4.104.1653.9631/8 -278.338.43M7.0*0.756.306.3786.188No.12-28(5.846)4.604.7244.4961/4 -1810.7211.13M7.0*0.56.506.5506.4001/4 - 285.505.5885.3603/8 -1814.2714.27M8.0*1.07.007.1536.9175/16 - 246.907.0356.782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 - 324.704.8264.6231 -11-1/228.5828.98M9.0*1.08.008.1537.9171/2 - 2011.5011.60711.3291/4 - 325.605.6905.4861-1/4 -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 - 328.708.8658.6612 -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*0.59.509.5209.4001 - 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标准径2级牙钻孔径

圆锥角：1：16 牙形角60°只有圆锥没有圆柱公称通径NPS1/8″2710.248.71/4″81913.1511.459.7141/4″1813.61611.3510.2141/41913.1511.45 3/8101916.6614.9510.115 3/81817.0514.7910.4153/81916.6614.951/2151420.9518.6313.2181/21421.2218.3213.6181/21420.9518.633/4201426.4424.3214.5193/41426.5723.6613.7193/41426.4424.321251133.2530.2916.824111.533.2229.6917.42311133.2530.291-1/4321141.9138.9519.1251-1/411.541.9838.4518261-1/41141.9138.951-1/2401147.844.819.1261-1/211.548.0544.5218.4261-1/21147.844.82501159.656.6623.426211.560.0956.5519.23021159.656.662-1/2651175.1872.2226.7362-1/2872.6967.6128.9332-1/21175.1872.223801187.8884.9229.8403888.683.5230.53731187.8884.92410011113.111035.84348113.97108.893343411113.1110512511138.4135.440.15058140.95135.8735.750511138.4135.4615011163.8160.840.15568167.79162.7138.455611163.8160.8常用螺纹尺寸表(更新）ＺＧ５５°（现ＲＣ）园锥管螺纹Z/Ｋ６０°（ＮＰＴ）园锥管螺纹Ｇ（５５°）园柱管螺纹