螺纹孔径对照表

1、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 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 粗粗 螺螺 纹纹公公 制制 细细 螺螺 纹纹公公 制制 迫迫 牙牙 丝丝 攻攻 钻钻 孔孔 径径 规格标准径 2级牙钻孔径 规格标准径 2级牙钻孔径 规 格 最大最小最大最小 m1.0*0.250.750.785

2、0.729m12*1.011.0011.15310.917m1.0*0.25 m1.1*0.250.850.8850.829m12*0.511.5011.52011.400m1.1*0.25 m1.2*0.250.950.9850.929m14*1.512.5012.67612.376m1.2*0.25 m1.4*0.31.101.1421.075m14*1.013.0013.15312.917m1.4*0.3 m1.6*0.351.251.3211.221m15*1.513.5013.67613.376m1.6*0.35 m1.7*0.351.351.4211.321m15*1.014.00

3、14.15313.917m1.7*0.35 m1.8*0.351.451.5211.421m16*1.514.5014.67614.376m1.8*0.35 m2.0*0.41.601.6791.567m16*1.015.0015.15314.917m2*0.4 m2.2*0.451.751.8381.713m17*1.515.5015.67615.376m2.2*0.45 m2.3*0.41.901.9791.867m17*1.016.0016.15315.917m2.3*0.4 m2.5*0.452.102.1382.013m18*2.016.0016.21015.835m2.5*0.45

4、 m2.6*0.452.202.2382.113m18*1.516.5016.67616.376m2.6*0.45 m3.0*0.52.502.5992.459m18*1.017.0017.15316.917m3.0*0.5 m3.0*0.62.402.4402.280m20*2.018.0018.21017.835m3.5*0.6 m3.5*0.62.903.0102.850m20*1.518.5018.67618.376m4.0*0.7 m4.0*0.73.303.4223.242m20*1.019.0019.15318.917m5.0*0.8 m4.0*0.753.253.3263.10

5、6m22*2.020.0020.21019.835m6.0*1.0 m4.5*0.753.803.8783.688m22*1.520.5020.67620.376m7.0*1.0 m5.0*0.84.204.3344.134m22*1.021.0021.15320.917m8.0*1.25 m5.0*0.94.104.1703.930m24*2.022.0022.21021.835m10*1.5 m6.0*1.05.005.1534.917m24*1.522.5022.67622.376m10*1.25 m7.0*1.06.006.1535.917m24*1.023.0023.15322.91

6、7m12*1.75 m8.0*1.256.806.9126.647m25*2.023.0023.21022.835m12*1.25 m9.0*1.257.807.9127.647m25*1.523.5023.67623.376 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。 m10*1.58.508.6768.376m25*1.024.0024.15323.917 m11*1.59.509.6769.376m26*1.524.5024.67624.376 m12*1.7510.3010.441

7、10.106m27*2.025.0025.21024.835 m14*2.012.0012.21011.835m27*1.525.5025.67625.376 m16*2.014.0014.21013.835m27*1.026.0026.15325.917 m18*2.515.5015.74415.294m28*2.026.0026.21025.835 美美 制制 粗粗 螺螺 纹纹 m20*2.517.5017.74417.294m28*1.526.5026.67626.376 m22*2.519.5019.74419.294m28*1.027.0027.15326.917规格 m24*3.0

8、21.0021.25220.752m30*3.027.0027.25226.752(unc) m27*3.024.0024.25223.752m30*2.028.0028.21027.835 (螺丝牙外径) m30*3.526.5026.77126.211m30*1.528.5028.67628.376no.1-64(1.854) m30*1.029.0029.15328.917no.2-56(2.184) m32*2.030.0030.21029.835no.3-48(2.515) 公公 制制 细细 螺螺 纹纹 m32*1.530.5030.67630.376no.4-40(2.845) m

9、33*3.030.0030.25229.752no.5-40(3.175) 规格标准径 2级牙钻孔径m33*2.031.0031.21030.835no.6-32(3.505) 最大最小m33*1.531.5031.67631.376no.8-32(4.166) m1.0*0.20.800.8210.783m35*1.533.5033.67633.376no.10-24(4.826) m1.1*0.20.900.9210.883m36*3.033.0033.25232.752no.12-24(5.486) m1.2*0.21.001.0210.983m36*2.034.0034.21033.8

10、351/4 - 20 m1.4*0.21.201.2211.183m36*1.534.5034.67634.3765/16 - 18 m1.6*0.21.401.4211.3833/8 - 16 m1.7*0.21.451.5001.4607/16 - 14 m1.8*0.21.601.6211.583 美美 制制 细细 螺螺 纹纹 1/2 - 13 m2.0*0.251.751.7851.7299/16 - 12 m2.2*0.251.951.9851.929规格 标准径 2级牙钻孔径5/8 - 11 m2.3*0.252.052.0612.001(unf)最大最小3/4 - 10 m2.5

11、*0.352.202.2212.121 (螺丝牙外径) 7/8 - 9 m2.6*0.352.202.2462.186no.0-80(1.524)1.251.3051.1821 - 8 m3.0*0.352.702.7212.621no.1-72(1.854)1.551.6121.4741-1/8 - 7 m3.5*0.353.203.2213.121no.2-64(2.184)1.851.9121.7561-1/4 - 7 m4.0*0.53.503.5993.459no.3-56(2.515)2.102.1972.0251-3/8 - 6 m4.5*0.54.004.0993.959no.

12、4-48(2.845)2.402.4582.2711-1/2 - 6 m5.0*0.54.504.5994.459no.5-44(3.175)2.702.7402.5511-3/4 - 5 m5.5*0.55.005.0994.959no.6-40(3.505)2.903.0222.8202 - 4-1/2 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)4.6

13、04.7244.496 美美 制制 特特 细细 螺螺 纹纹 m7.0*0.56.506.5506.4001/4 - 285.505.5885.360 m8.0*1.07.007.1536.9175/16 - 246.907.0356.782规格 m8.0*0.757.307.3787.1883/8 - 248.508.6368.382(unef) m8.0*0.57.507.5207.4007/16 - 209.9010.0339.729no.12 - 32 m9.0*1.08.008.1537.9171/2 - 2011.5011.60711.3291/4 - 32 m9.0*0.758.3

14、08.3788.1889/16 - 1812.9013.08112.7515/16 - 32 m10*1.258.808.9128.4675/8 - 1814.5014.68114.3513/8 - 32 m10*1.09.009.1538.9173/4 - 1617.5017.67817.3237/16 - 28 m10*0.759.309.3789.1887/8 - 1420.5020.67520.2701/2 - 28 m10*0.59.509.5209.4001 - 1223.2023.57123.1149/16 - 24 m11*1.010.0010.1539.9171-1/8 -

15、1226.5026.74626.2895/8 - 24 m11*0.7510.3010.37810.1881-1/4 - 1229.5029.92129.4643/4 - 20 m12*1.510.5010.67610.3761-3/8 - 1232.8033.09632.6397/8 - 20 m12*1.2510.8010.91210.6471-1/2 - 1236.036.27135.8141 - 20 美美 制制 迫迫 牙牙 丝丝 攻攻 钻钻 孔孔 径径英英 制制 螺螺 纹纹 精 度 等 级 规 格 精 度 等 级 规 格 钻孔径 g4-g6g7-g8g9g4-g6g7-g8g9硬 材

16、软 材 0.860.88no.2-56unc1.94w1/8 -402.652.60 0.960.98no.3-482.23w5/32 -323.253.20 1.061.08no.4-402.50w3/16 -243.753.70 1.241.25no.5-402.83w1/4 -205.105.00 1.411.43no.6-323.07w5/16 -186.606.50 1.511.53no.8-323.733.77w3/8 -168.007.90 1.611.63no.10-244.244.30w7/16 -149.409.30 1.781.80no.12-244.904.96w1/2

17、 -1210.7010.50 1.951.981/4 -205.72w9/16 -1212.3012.00 2.082.105/16 -187.24w5/8 -1113.7013.50 2.252.283/8 -168.748.81w3/4 -1016.7016.50 2.352.387/16 -1410.2010.30w7/8 -919.5019.30 2.732.751/2 -1311.2711.82w1 -822.4022.00 3.173.20no.2-64unf1.97w1-1/8-725.0024.80 3.623.653.69no.3-562.27w1-1/4-728.3028.

18、00 4.564.604.64no.4-482.56 5.455.505.55no.5-442.86 6.456.506.55no.6-403.16 针针 车车 用用 螺螺 纹纹 7.317.387.44no.8-363.78 9.189.259.32no.10-324.394.43规格滚造径 9.319.389.44no.12-284.995.04sm1/8 -40 2.735-2.688 11.0411.1211.211/4 -285.855.90sm1/8 -44 2.769-2.722 11.3111.3811.445/16 -247.367.41sm9/64 -40 3.128-3.

19、083 3/8 -249.00sm11/64-40 3.855-3.805 7/16 -2010.4810.54sm3/16 -32 4.205-4.155 1/2 -2012.0712.13sm3/16 -28 4.143-4.093 sm7/32 -32 5.003-4.955 sm15/64-28 5.325-5.570 英英 制制 管管 螺螺 纹纹 sm1/4 -40 5.890-5.735 sm1/4 -28 5.721-5.366 规格标准径 钻孔径sm9/32 -28 6.508-6.648 标准径 2级牙钻孔径最大最小sm11/32-28 8.092-8.432 最大最小ps

20、1/16 - 286.506.6326.490sm3/8 -28 8.880-8.015 ps 1/8 - 288.508.6378.495sm7/16 -28 10.466-10.401 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 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 迫迫 牙牙 丝丝 攻攻

21、 钻钻 孔孔 径径 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。 美美 制制 粗粗 螺螺 纹纹 1.551.5821.425ps 1/4 - 1911.4011.54911.341sm7/16 -16 10.037-9.967 1.801.8711.695ps 3/8 - 1915.0015.05414.846sm1/2 -20 11.819-11.749 2.102.1461.941ps 1/2 - 1418.5018.77318.489sm9/16 -20 13.400-13.425 2

22、.302.3852.157ps 3/4 - 1424.0024.25923.975 2.602.6972.487ps 1 - 1130.2030.47130.111 2.802.8952.642ps 1-1/4 - 1138.8039.13238.772 公公 制制 螺螺 纹纹 3.403.5303.302ps 1-1/2 - 1144.8045.02544.665 3.903.9623.683ps 2 - 1156.5056.83656.476规格滚造径 4.504.5974.344m3*0.52.63-2.60 5.105.2574.979m3.0*0.62.56-2.53 6.606.7

23、316.401 英英 制制 管管 螺螺 纹纹 m3.5*0.63.06-3.03 8.008.1537.798m4.0*0.73.49-3.45 9.409.5509.144 规 格 标准径 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 m4.0*0.753.45-3.41 10.8011.02310.592 使用绞刀时 不用绞刀时m4.5*0.753.96-3.92 12.2012.44611.989pt 1/16 -286.106.206.2446.384m5.0*0.84.43-4.38 13.6012.86813.386pt 1/8 -288.108.208.4298.388m5.0*0.94.36-4.31 16.5018.84016.307pt 1/4 -1910.7011.0010.96211.174m6.0*1.05.30-5.25 19.5019.76119.177pt 3/8 -1914.2014.5014.44814.658m7.0*1.06.30-6.25 22.2022.60621.971pt 1/2 -1417.6018.0017.97918.263m8.0*1.07.28-7.23 25.0025.34924.638pt 3/4 -1423.0023.5023.37823.663m8.0