螺丝攻牙孔径对照表.pdf

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1、 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.2-56UNC1.942.652.60 M1.1*0.250.850.8850.829M12*0.511.5011.52011.400M1.1*0.250.960.98No.3-482.233.253.20 M1.2*0.250.950.9850.929M14*1.512.5012.67612.376M1.2*0.251.061.08No.4-402.503.753.70 M1.4*0.

2、31.101.1421.075M14*1.013.0013.15312.917M1.4*0.31.241.25No.5-402.835.105.00 M1.6*0.351.251.3211.221M15*1.513.5013.67613.376M1.6*0.351.411.43No.6-323.076.606.50 M1.7*0.351.351.4211.321M15*1.014.0014.15313.917M1.7*0.351.511.53No.8-323.733.778.007.90 M1.8*0.351.451.5211.421M16*1.514.5014.67614.376M1.8*0

3、.351.611.63No.10-244.244.309.409.30 M2.0*0.41.601.6791.567M16*1.015.0015.15314.917M2*0.41.781.80No.12-244.904.9610.7010.50 M2.2*0.451.751.8381.713M17*1.515.5015.67615.376M2.2*0.451.951.981/4 -205.7212.3012.00 M2.3*0.41.901.9791.867M17*1.016.0016.15315.917M2.3*0.42.082.105/16 -187.2413.7013.50 M2.5*0

4、.452.102.1382.013M18*2.016.0016.21015.835M2.5*0.452.252.283/8 -168.7416.7016.50 M2.6*0.452.202.2382.113M18*1.516.5016.67616.376M2.6*0.452.352.387/16 -1410.2019.5019.30 M3.0*0.52.502.5992.459M18*1.017.0017.15316.917M3.0*0.52.732.751/2 -1311.2722.4022.00 M3.0*0.62.402.4402.280M20*2.018.0018.21017.835M

5、3.5*0.63.173.20No.2-64UNF1.9725.0024.80 M3.5*0.62.903.0102.850M20*1.518.5018.67618.376M4.0*0.73.623.653.69No.3-562.2728.3028.00 M4.0*0.73.303.4223.242M20*1.019.0019.15318.917M5.0*0.84.564.604.64No.4-482.56 M4.0*0.753.253.3263.106M22*2.020.0020.21019.835M6.0*1.05.455.505.55No.5-442.86 M4.5*0.753.803.

6、8783.688M22*1.520.5020.67620.376M7.0*1.06.456.506.55No.6-403.16 M5.0*0.84.204.3344.134M22*1.021.0021.15320.917M8.0*1.257.317.387.44No.8-363.78 M5.0*0.94.104.1703.930M24*2.022.0022.21021.835M10*1.59.189.259.32No.10-324.394.43 M6.0*1.05.005.1534.917M24*1.522.5022.67622.376M10*1.259.319.389.44No.12-284

7、.995.04SM1/8 -40 M7.0*1.06.006.1535.917M24*1.023.0023.15322.917M12*1.7511.0411.1211.211/4 -285.855.90SM1/8 -44 M8.0*1.256.806.9126.647M25*2.023.0023.21022.835M12*1.2511.3111.3811.445/16 -247.367.41SM9/64 -40 M9.0*1.257.807.9127.647M25*1.523.5023.67623.3763/8 -249.00SM11/64-40 M10*1.58.508.6768.376M2

8、5*1.024.0024.15323.9177/16 -2010.48SM3/16 -32 M11*1.59.509.6769.376M26*1.524.5024.67624.3761/2 -2012.07SM3/16 -28 M12*1.7510.3010.44110.106M27*2.025.0025.21024.835SM7/32 -32 M14*2.012.0012.21011.835M27*1.525.5025.67625.376SM15/64-28 M16*2.014.0014.21013.835M27*1.026.0026.15325.917SM1/4 -40 M18*2.515

9、.5015.74415.294M28*2.026.0026.21025.835SM1/4 -28 M20*2.517.5017.74417.294M28*1.526.5026.67626.376SM9/32 -28 M22*2.519.5019.74419.294M28*1.027.0027.15326.917规格最大SM11/32-28 M24*3.021.0021.25220.752M30*3.027.0027.25226.752(UNC)最大最小PS 1/16 - 286.506.632SM3/8 -28 M27*3.024.0024.25223.752M30*2.028.0028.21

10、027.835 (螺丝牙外径)PS 1/8 - 288.508.637SM7/16 -28 M30*3.526.5026.77126.211M30*1.528.5028.67628.376No.1-64(1.854)1.551.5821.425PS 1/4 - 1911.4011.549 M30*1.029.0029.15328.917No.2-56(2.184)1.801.8711.695PS 3/8 - 1915.0015.054 M32*2.030.0030.21029.835No.3-48(2.515)2.102.1461.941PS 1/2 - 1418.5018.773 M32*1

11、.530.5030.67630.376No.4-40(2.845)2.302.3852.157PS 3/4 - 1424.0024.259 M33*3.030.0030.25229.752No.5-40(3.175)2.602.6972.487PS 1 - 1130.2030.471 M33*2.031.0031.21030.835No.6-32(3.505)2.802.8952.642PS 1-1/4 - 1138.8039.132 最大最小M33*1.531.5031.67631.376No.8-32(4.166)3.403.533.302PS 1-1/2 - 1144.8045.025

12、M1.0*0.20.800.8210.783M35*1.533.5033.67633.376No.10-24(4.826)3.903.9623.683PS 2 - 1156.5056.836 M1.1*0.20.900.9210.883M36*3.033.0033.25232.752No.12-24(5.486)4.504.5974.344 M1.2*0.21.001.0210.983M36*2.034.0034.21033.8351/4 - 205.105.2574.979 M1.4*0.21.201.2211.183M36*1.534.5034.67634.3765/16 - 186.60

13、6.7316.401 M1.6*0.21.401.4211.3833/8 - 168.008.1537.798 M1.7*0.21.451.5001.4607/16 - 149.409.559.144 M1.8*0.21.601.6211.5831/2 - 1310.8011.02310.592使用绞刀时 不用绞刀时 M2.0*0.251.751.7851.7299/16 - 1212.2012.44611.989PT 1/16 -286.106.206.2446.384 M2.2*0.251.951.9851.929规格5/8 - 1113.6012.86813.386PT 1/8 -288

14、.108.208.4298.388 M2.3*0.252.052.0612.001(UNF)最大最小3/4 - 1016.5018.8416.307PT 1/4 -1910.7011.0010.96211.174 M2.5*0.352.202.2212.1217/8 - 919.5019.76119.177PT 3/8 -1914.2014.5014.44814.658 M2.6*0.352.202.2462.186No.0-80(1.524)1.251.3051.1821 - 822.2022.60621.971PT 1/2 -1417.6018.0017.97918.263 M3.0*0.

15、352.702.7212.621No.1-72(1.854)1.551.6121.4741-1/8 - 725.0025.34924.638PT 3/4 -1423.0023.5023.37823.663 M3.5*0.353.203.2213.121No.2-64(2.184)1.851.9121.7561-1/4 - 728.2028.52427.813PT 1 -1129.0029.5029.45929.822 M4.0*0.53.503.5993.459No.3-56(2.515)2.102.1972.0251-3/8 - 630.8031.11530.353PT 1-1/4 -113

16、7.5038.0037.97638.339 M4.5*0.54.004.0993.959No.4-48(2.845)2.402.4582.2711-1/2 - 634.0034.2933.528PT 1-1/2 -1143.4044.0043.86944.232 M5.0*0.54.504.5994.459No.5-44(3.175)2.702.742.5511-3/4 - 539.5039.82738.964PT 2 -1154.9055.5055.41255.844 M5.5*0.55.005.0994.959No.6-40(3.505)2.903.0222.822 - 4-1/245.2

17、045.59344.679 M6.0*0.755.305.3785.188No.8-36(4.166)3.503.6063.404 M6.0*0.55.505.5505.400No.10-32(4.826)4.104.1653.963 M7.0*0.756.306.3786.188No.12-28(5.846)4.604.7244.496 M7.0*0.56.506.5506.4001/4 - 285.505.5885.36 M8.0*1.07.007.1536.9175/16 - 246.907.0356.782规格 M8.0*0.757.307.3787.1883/8 - 248.508.

18、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 - 324.704.8264.6231/16 - 276.106.25 M9.0*1.08.008.1537.9171/2 - 2011.5011.60711.3291/4 - 325.605.695.4861/8 -278.338.43 M9.0*0.758.308.3788.1889/16 - 1812.9013.08112.7515/16 - 327.107.2647.0871/4 -1810.7211.13 M10*1.258

19、.808.9128.4675/8 - 1814.5014.68114.3513/8 - 328.708.8658.6613/8 -1814.2714.27 M10*1.09.009.1538.9173/4 - 1617.5017.67817.3237/16 - 2810.2010.33810.1351/2 -1417.4817.86 M10*0.759.309.3789.1887/8 - 1420.5020.67520.271/2 - 2811.8011.93811.7093/4 -1422.6323.01 M10*0.59.509.5209.4001 - 1223.2023.57123.11

20、49/16 - 2413.2013.38613.1321 -11-1/228.5828.98 M11*1.010.0010.1539.9171-1/8 - 1226.5026.74626.2895/8 - 2414.8014.98614.7321-1/4 -11-1/237.3137.69 M11*0.7510.3010.37810.1881-1/4 - 1229.5029.92129.4643/4 - 2017.8017.95817.6781-1/2 -11-1/243.6644.04 M12*1.510.5010.67610.3761-3/8 - 1232.8033.09632.6397/

21、8 - 2021.0021.13320.8532 -11-1/255.5855.96 M12*1.2510.8010.91210.6471-1/2 - 1236.0036.27135.8141 - 2024.0024.30824.028 螺螺 纹纹 攻攻 牙牙 钻钻 孔孔 径径 和和 滚滚 造造 径径 对对 照照 表表 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 标准径 2级牙钻孔径 标准径 2级牙钻孔径 4.0

22、-4.2 M4.0*0.7 M4.0*0.75 M4.5*0.75 钻 孔 径 3.4-3.6 3.0-3.2 英制电器螺纹英制电器螺纹 4BA 规 格 2BA SM7/16 -16 SM1/2 -20 M6.0*1.0 M7.0*1.0 M8.0*1.0 M8.0*1.25 规格 M3*0.5 M3.0*0.6 M3.5*0.6 M5.0*0.8 M5.0*0.94.36-4.31 5.30-5.25 5BA 6BA 3BA 7.12-7.07 2.7-2.8 2.4-2.5 滚造径 2.63-2.60 2.56-2.53 3.06-3.03 6.30-6.25 7.28-7.23 3.49

23、-3.45 3.45-3.41 3.96-3.92 4.43-4.38 11.819-11.749 13.400-13.425 公公 制制 螺螺 纹纹 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。 SM9/16 -20 8.092-8.432 8.880-8.015 10.466-10.401 10.037-9.967 5.325-5.570 2.735-2.688 2.769-2.722 3.128-3.083 5.890-5.735 5.721-5.366 6.508-6.648 3.8

24、55-3.805 4.205-4.155 4.143-4.093 5.003-4.955 W1 -8 W1-1/8-7 W1-1/4-7 规格 针针 车车 用用 螺螺 纹纹 滚造径 W7/16 -14 W1/2 -12 W9/16 -12 W5/8 -11 W3/4 -10 W7/8 -9 W1/8 -40 W5/32 -32 W3/16 -24 W1/4 -20 W5/16 -18 W3/8 -16 英 制 螺 纹英 制 螺 纹 钻孔径 规 格 6.35 8.74 11.13 14.68 18.26 23.42 29.36 规格N P T N P S 38.10 44.45 56.36 英英

25、 制制 管管 螺螺 纹纹 44.665 56.476 18.489 23.975 30.111 38.772 钻孔径 最小 规格标准径 有效牙部之长 度(最小)中之 母螺牙内径 6.49 8.495 11.341 14.846 标准长度(最 小)中之母螺 牙内径 10.54 12.13 英英 制制 管管 螺螺 纹纹 8.81 10.30 11.82 美美 制制 迫迫 牙牙 丝丝 攻攻 钻钻 孔孔 径径 精 度 等 级 G9 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。 公公 制制 细细 螺螺 纹纹 2级牙钻孔径 标准径规格 公公 制制 粗粗 螺螺 纹公纹公 制制 迫迫 牙牙

26、丝丝 攻攻 钻钻 孔孔 径径 规 格 精 度 等 级 美美 制制 粗粗 螺螺 纹纹 规格 公公 制制 细细 螺螺 纹纹 规格标准径 2级牙钻孔径 标准径 2级牙钻孔径 标准径 2级牙钻孔径 美美 制制 特特 细细 螺螺 纹纹 规 格 (螺丝牙外径) 美美 制制 细细 螺螺 纹 美 纹 美 制制 管管 螺螺 纹纹 钻 孔 径 标准径 规 格 螺丝攻牙钻孔径对照表 美制（粗）挤牙丝攻钻孔径公制挤牙丝攻钻孔径美制细牙螺纹公制粗牙螺纹公制细牙螺纹 规格精度maxmin规格精度maxmin 2-56UNCRH42.021.96M1.0 0.25RH40.920.90最大最小最大最小最大最小 3-48RH

27、42.322.25M1.1 0.25RH41.021.00螺丝牙外径M1.0 0.250.750.7850.729M7.0 0.506.506.5506.400 4-40RH52.602.52M1.2 0.25RH41.121.10No.0-80（1.524）1.251.3051.182M1.1 0.250.850.8850.829M8.0 1.007.007.1536.917 5-40RH52.932.86M1.4 0.30RH41.2941.270No.1-72（1.854）1.551.6121.474M1.2 0.250.950.9850.929M8.0 0.757.307.3787.1

28、88 6-32RH53.173.09M1.6 0.35RH41.451.40No.2-64（2.184）1.851.9121.756M1.4 0.301.101.1421.075M8.0 0.507.507.5207.400 8-32RH63.833.75M1.7 0.35RH41.581.54No.3-56（2.515）2.102.1972.025M1.6 0.351.251.3211.221M9.0 1.008.008.1537.917 10-24RH64.354.26M2.0 0.40RH41.851.81No.4-48（2.845）2.402.4582.271M1.7 0.351.35

29、1.4211.321M9.0 0.758.308.3788.188 12-24RH65.014.92M2.3 0.40RH42.152.11No.5-44（3.175）2.702.7402.551M1.8 0.351.451.5211.421M10.0 1.258.808.9128.647 1/4-20RH65.765.66M2.5 0.45RH42.332.28No.6-40（3.505）2.903.0222.820M2.0 0.401.601.6791.567M10.0 1.009.009.1538.917 5/16-18RH77.297.18M2.6 0.45RH42.432.38No.

30、8-36（4.166）3.503.6063.404M2.2 0.451.751.8381.713M10.0 0.759.309.3789.188 3/8-16RH78.788.66M3.0 0.50RH52.812.76No.10-32（4.826）4.104.1653.963M2.3 0.401.901.9791.867M10.0 0.509.509.5209.400 7/16-14RH710.2510.11M3.5 0.60RH53.263.20No.12-28（5.486）4.604.7244.496M2.5 0.452.102.1382.013M11.0 1.0010.0010.153

31、9.917 1/2-13RH811.7811.62M4.0 0.70RH63.703.651/4-285.505.5885.360M2.6 0.452.202.2382.113M11.0 0.7510.3010.37810.188 9/16-12RH1013.2713.14M5.0 0.80RH64.664.595/16-246.907.0356.782M3.0 0.502.502.5992.459M12.0 1.5010.5010.67610.376 5/8-11RH1114.7614.62M6.0 1.00RH75.575.483/8-248.508.6368.382M3.5 0.602.

32、903.0102.850M12.0 1.2510.8010.91210.647 3/4-10RH1217.8817.67M7.0 1.00RH76.576.487/16-209.9010.0339.729M4.0 0.703.303.4223.242M12.0 1.0011.0011.15310.917 7/8-9RH1220.8520.68M8.0 1.00RH77.577.481/2-2011.5011.60711.329M4.5 0.753.803.8783.688M12.0 0.5011.5011.52011.400 1-8RH1323.8423.65M8.0 1.25RH77.417

33、.349/16-1812.9013.08112.751M5.0 0.804.204.3344.134M14.0 1.5012.5012.67612.376 M10 1.00RH79.579.485/8-1814.5014.68114.351M6.0 1.005.005.1534.917M14.0 1.0013.0013.15312.917 美制（细）挤牙丝攻钻孔径M10 1.25RH79.419.343/4-1617.5017.67817.323M7.0 1.006.006.1535.917M15.0 1.5013.5013.67613.376 规格精度maxminM10 1.50RH79.2

34、89.187/8-1420.5020.67520.270M8.0 1.256.806.9126.647M15.0 1.0014.0014.15313.917 2-64UNFRH32.041.98M12 1.00RH711.5711.181-1223.3023.57123.114M9.0 1.257.807.9127.647M16.0 1.5014.5014.67614.376 3-56RH42.352.29M12 1.25RH711.4111.051-1/8-1226.5026.74626.289M10.0 1.508.508.6768.376M16.0 1.0015.0015.15314.9

35、17 4-48RH42.642.57M12 1.50RH711.2811.481-1/4-1229.6029.92129.464M11.0 1.509.509.6769.376M17.0 1.5015.5015.67615.376 5-44RH42.952.88M12 1.75RH811.1511.341-3/8-1232.8033.09632.639M12.0 1.7510.3010.44110.106M17.0 1.0016.0016.15315.917 6-40RH53.263.19M14 1.50RH913.3013.211-1/2-1236.0036.27135.814M14.0 2

36、.0012.0012.21011.835M18.0 2.0016.0016.21015.835 8-36RH53.883.80M14 2.00RH1013.0412.92M16.0 2.0014.0014.21013.835M18.0 1.5016.5016.67616.376 10-32RH54.484.41M16 1.50RH915.3015.21M18.0 2.5015.5015.74415.294M18.0 1.0017.0017.15316.917 12-28RH55.085.00M16 2.00RH1015.0414.92M20.0 2.5017.5017.74417.294M20

37、.0 2.0018.0018.21017.835 1/4-28RH55.935.86M18 1.5RH1017.3117.22M22.0 2.5019.5019.74419.294M20.0 1.5018.5018.67618.376 5/16-24RH67.467.38M18 2.5RH1116.7816.63M24.0 3.0021.0021.25220.752M20.0 1.0019.0019.15318.917 3/8-24RH69.058.96M20 1.5RH1019.3119.22M27.0 3.0024.0024.25223.752M22.0 2.0020.0020.21019

38、.835 7/16-20RH710.5410.44M20 2.5RH1118.7818.63M30.0 3.5026.5026.77126.211M22.0 1.5020.5020.67620.376 1/2-20RH712.1212.02M33.0 3.5029.5029.77129.211M22.0 1.0021.0021.15320.917 9/16-18RH913.6613.55最大最小M36.0 4.0032.0032.27031.670M24.0 2.0022.0022.21021.835 5/8-18RH915.2515.14螺丝牙外径M39.0 4.0035.0035.2703

39、4.670M24.0 1.5022.5022.67622.376 3/4-16RH1018.3218.221. 外径-牙距 0.45=下孔D-P 0.45No.1-64（1.854）1.551.5821.425M24.0 1.0023.0023.15322.917 7/8-14RH1121.3821.272. Dn=D-0.2P-0.00403?P?f1+0.0127?nNo.2-56（2.184）1.801.8711.695M25.0 2.0023.0023.21022.835 1-12RH1224.4124.28例M3 0.5RH6 2级母螺纹攻牙 咬合率90%No.3-48（2.515）

40、2.102.1461.941M25.0 1.5023.5023.67623.376 Dn=3-0.2 0.5-0.00403 0.5 90+0.0127 6No.4-40（2.845）2.302.3852.157最大最小M25.0 1.0024.0024.15323.917 =2.80No.5-40（3.175）2.602.6972.487M1.0 0.200.800.8210.783M26.0 1.5024.5024.67624.376 山数山数Dn=下孔径 D=基准外径 P=牙距No.6-32（3.505）2.802.8952.642M1.1 0.200.900.9210.883M27.0

41、 2.0025.0025.21024.835 每25.4mm每25.4mmf1=咬合率 n=RH精度No.8-32（4.166）3.403.5303.302M1.2 0.201.001.0210.983M27.0 1.5025.5025.67625.376 1000.2540 122.1167No.10-24（4.826）3.903.9623.683M1.4 0.201.201.2211.183M27.0 1.0026.0026.15325.917 800.3175 112.3091No.12-24（5.486）4.504.5974.344M1.6 0.201.401.4211.383M28.

42、0 2.0026.0026.21025.835 720.3528 102.54001/4-205.105.2574.979M1.7 0.201.501.5211.483M28.0 1.5026.5026.67626.376 640.3969 92.82225/16-186.606.7316.401M1.8 0.201.601.6211.583M28.0 1.0027.0027.15326.917 600.4233 83.17503/8-168.008.1537.798M2.0 0.251.751.7851.729M30.0 3.0027.0027.25226.752 560.4536 73.6

43、2867/16-149.409.5509.144M2.2 0.251.951.9851.929M30.0 2.0028.0028.21027.835 480.5292 64.23331/2-1310.9011.02310.592M2.3 0.252.052.0612.001M30.0 1.5028.5028.67628.376 440.5773 55.0800规格吋mm9/16-1212.2012.46611.989M2.5 0.352.202.2212.121M30.0 1.0029.0029.15328.917 400.6350 4 1/25.6444 No. 00.06001.5245/

44、8-1113.6013.86813.386M2.6 0.352.202.2462.186M32.0 2.0030.0030.21029.835 360.7056 46.350010.07301.8543/4-1016.6016.84016.307M3.0 0.352.702.7212.621M32.0 1.5030.5030.67630.376 320.7938 3 1/27.257120.08602.1847/8-919.6019.76119.177M3.5 0.353.203.2213.121M33.0 3.0030.0030.25229.752 280.9071 3 1/47.81543

45、0.09902.5151-822.3022.60621.971M4.0 0.403.503.5993.459M33.0 2.0031.0031.21030.835 241.0583 38.466740.11202.8451-1/8-725.0025.34924.638M4.5 0.404.004.0993.959M33.0 1.5031.5031.67631.376 201.2700 2 7/88.834850.12503.1751-1/4-728.2028.52427.813M5.0 0.404.504.5994.459M35.0 1.5033.5033.67633.376 181.4111

46、 2 3/49.236460.13803.5051-3/8-630.8031.11530.353M5.5 0.405.005.0994.959M36.0 3.0033.0033.25232.752 161.5875 2 5/89.676280.16404.1661-1/2-634.0034.29033.528M6.0 0.755.305.3785.188M36.0 2.0034.0034.21033.835 141.8143 2 1/210.1600100.19004.8261-3/4-539.5039.82738.964M6.0 0.505.505.5505.400M36.0 1.5034.5034.67634.376 131.9538120.21605.4862-4-1/245.2045.59344.679M7.0 0.756.306.3786.188 美制螺丝外径公厘（mm）换算表 美制粗牙螺纹 公制细牙螺纹 规格标准径 2级牙钻孔径 NRT下孔径计算式 规格标准径 2级牙钻孔径 规格标准径 2级牙钻孔径 2级牙钻孔径 规格标准径 2级牙钻孔径 牙距mm牙距mm 规格标准径 山数节距换算表