螺纹孔径对照表1

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*0.250.750.7850.729M12*1.

2、011.0011.15310.917M1.0*0.25M1.1*0.250.850.8850.829M12*0.511.5011.52011.400M1.1*0.25M1.2*0.250.950.9850.929M14*1.512.5012.67612.376M1.2*0.25M1.4*0.31.101.1421.075M14*1.013.0013.15312.917M1.4*0.3M1.6*0.351.251.3211.221M15*1.513.5013.67613.376M1.6*0.35M1.7*0.351.351.4211.321M15*1.014.0014.15313.917M1.7

3、*0.35M1.8*0.351.451.5211.421M16*1.514.5014.67614.376M1.8*0.35M2.0*0.41.601.6791.567M16*1.015.0015.15314.917M2*0.4M2.2*0.451.751.8381.713M17*1.515.5015.67615.376M2.2*0.45M2.3*0.41.901.9791.867M17*1.016.0016.15315.917M2.3*0.4M2.5*0.452.102.1382.013M18*2.016.0016.21015.835M2.5*0.45M2.6*0.452.202.2382.1

4、13M18*1.516.5016.67616.376M2.6*0.45M3.0*0.52.502.5992.459M18*1.017.0017.15316.917M3.0*0.5M3.0*0.62.402.4402.280M20*2.018.0018.21017.835M3.5*0.6M3.5*0.62.903.0102.850M20*1.518.5018.67618.376M4.0*0.7M4.0*0.73.303.4223.242M20*1.019.0019.15318.917M5.0*0.8M4.0*0.753.253.3263.106M22*2.020.0020.21019.835M6

5、.0*1.0M4.5*0.753.803.8783.688M22*1.520.5020.67620.376M7.0*1.0M5.0*0.84.204.3344.134M22*1.021.0021.15320.917M8.0*1.25M5.0*0.94.104.1703.930M24*2.022.0022.21021.835M10*1.5M6.0*1.05.005.1534.917M24*1.522.5022.67622.376M10*1.25M7.0*1.06.006.1535.917M24*1.023.0023.15322.917M12*1.75M8.0*1.256.806.9126.647

6、M25*2.023.0023.21022.835M12*1.25M9.0*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*1.024.0024.15323.917M11*1.59.509.6769.376M26*1.524.5024.67624.376M12*1.7510.3010.44110.106M27*2.025.0025.21024.835M14*2.012.0

7、012.21011.835M27*1.525.5025.67625.376M16*2.014.0014.21013.835M27*1.026.0026.15325.917M18*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*1.526.5026.67626.376M22*2.519.5019.74419.294M28*1.027.0027.15326.917规格M24*3.021.0021.25220.752M30*3.027.0027.25226.752(UNC)M2

8、7*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)M33*3.030.0030.25229.752No.5-40(3.175)规格标准径2级牙钻孔径M33*2.0

9、31.0031.21030.835No.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*2.034.0034.21033.8351/4 - 20M1.4*0.21.201.2211.183M36*1.534.5034.67634.3765/16

10、- 18M1.6*0.21.401.4211.3833/8 - 16M1.7*0.21.451.5001.4607/16 - 14M1.8*0.21.601.6211.583美美 制制 细细 螺螺 纹纹1/2 - 13M2.0*0.251.751.7851.7299/16 - 12M2.2*0.251.951.9851.929规格标准径2级牙钻孔径5/8 - 11M2.3*0.252.052.0612.001(UNF)最大最小3/4 - 10M2.5*0.352.202.2212.121 (螺丝牙外径)7/8 - 9M2.6*0.352.202.2462.186No.0-80(1.524)1.

11、251.3051.1821 - 8M3.0*0.352.702.7212.621No.1-72(1.854)1.551.6121.4741-1/8 - 7M3.5*0.353.203.2213.121No.2-64(2.184)1.851.9121.7561-1/4 - 7M4.0*0.53.503.5993.459No.3-56(2.515)2.102.1972.0251-3/8 - 6M4.5*0.54.004.0993.959No.4-48(2.845)2.402.4582.2711-1/2 - 6M5.0*0.54.504.5994.459No.5-44(3.175)2.702.740

12、2.5511-3/4 - 5M5.5*0.55.005.0994.959No.6-40(3.505)2.903.0222.8202 - 4-1/2M6.0*0.755.305.3785.188No.8-36(4.166)3.503.6063.404M6.0*0.55.505.5505.400No.10-32(4.826)4.104.1653.963M7.0*0.756.306.3786.188No.12-28(5.846)4.604.7244.496美美 制制 特特 细细 螺螺 纹纹M7.0*0.56.506.5506.4001/4 - 285.505.5885.360M8.0*1.07.00

13、7.1536.9175/16 - 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 - 32M9.0*1.08.008.1537.9171/2 - 2011.5011.60711.3291/4 - 32M9.0*0.758.308.3788.1889/16 - 1812.9013.08112.7515/16 - 32M10*1.258.808.9128.4675/8 - 1814.5014.68114.3

14、513/8 - 32M10*1.09.009.1538.9173/4 - 1617.5017.67817.3237/16 - 28M10*0.759.309.3789.1887/8 - 1420.5020.67520.2701/2 - 28M10*0.59.509.5209.4001 - 1223.2023.57123.1149/16 - 24M11*1.010.0010.1539.9171-1/8 - 1226.5026.74626.2895/8 - 24M11*0.7510.3010.37810.1881-1/4 - 1229.5029.92129.4643/4 - 20M12*1.510

15、.5010.67610.3761-3/8 - 1232.8033.09632.6397/8 - 20M12*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 材软 材0.860.88No.2-56UNC1.94W1/8 -402.652.600.960.98No.3-482.23W5/32 -323.253.201.061.08No.4-402.50W3/16 -243

16、.753.701.241.25No.5-402.83W1/4 -205.105.001.411.43No.6-323.07W5/16 -186.606.501.511.53No.8-323.733.77W3/8 -168.007.901.611.63No.10-244.244.30W7/16 -149.409.301.781.80No.12-244.904.96W1/2 -1210.7010.501.951.981/4 -205.72W9/16 -1212.3012.002.082.105/16 -187.24W5/8 -1113.7013.502.252.283/8 -168.748.81W

17、3/4 -1016.7016.502.352.387/16 -1410.2010.30W7/8 -919.5019.302.732.751/2 -1311.2711.82W1 -822.4022.003.173.20No.2-64UNF1.97W1-1/8-725.0024.803.623.653.69No.3-562.27W1-1/4-728.3028.004.564.604.64No.4-482.565.455.505.55No.5-442.866.456.506.55No.6-403.16针针 车车 用用 螺螺 纹纹7.317.387.44No.8-363.789.189.259.32N

18、o.10-324.394.43规格滚造径9.319.389.44No.12-284.995.04SM1/8 -40 2.735-2.68811.0411.1211.211/4 -285.855.90SM1/8 -44 2.769-2.72211.3111.3811.445/16 -247.367.41SM9/64 -40 3.128-3.0833/8 -249.00SM11/64-40 3.855-3.8057/16 -2010.4810.54SM3/16 -32 4.205-4.1551/2 -2012.0712.13SM3/16 -28 4.143-4.093SM7/32 -32 5.00

19、3-4.955SM15/64-28 5.325-5.570英英 制制 管管 螺螺 纹纹SM1/4 -40 5.890-5.735SM1/4 -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 1/16 - 286.506.6326.490SM3/8 -28 8.880-8.015PS 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

20、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 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

21、.037-9.9671.801.8711.695PS 3/8 - 1915.0015.05414.846SM1/2 -20 11.819-11.7492.102.1461.941PS 1/2 - 1418.5018.77318.489SM9/16 -20 13.400-13.4252.302.3852.157PS 3/4 - 1424.0024.25923.9752.602.6972.487PS 1 - 1130.2030.47130.1112.802.8952.642PS 1-1/4 - 1138.8039.13238.772公公 制制 螺螺 纹纹3.403.5303.302PS 1-1/2

22、 - 1144.8045.02544.6653.903.9623.683PS 2 - 1156.5056.83656.476规格滚造径4.504.5974.344M3*0.52.63-2.605.105.2574.979M3.0*0.62.56-2.536.606.7316.401英英 制制 管管 螺螺 纹纹M3.5*0.63.06-3.038.008.1537.798M4.0*0.73.49-3.459.409.5509.144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*0.753.45-3.4110.8011.02310.592使用绞刀时 不用绞

23、刀时M4.5*0.753.96-3.9212.2012.44611.989PT 1/16 -286.106.206.2446.384M5.0*0.84.43-4.3813.6012.86813.386PT 1/8 -288.108.208.4298.388M5.0*0.94.36-4.3116.5018.84016.307PT 1/4 -1910.7011.0010.96211.174M6.0*1.05.30-5.2519.5019.76119.177PT 3/8 -1914.2014.5014.44814.658M7.0*1.06.30-6.2522.2022.60621.971PT 1/2 -1417.6018.0017.97918.263M8.0*1.07.28-7.2325.0025.34924.638PT 3/4 -1423.0023.5023.37823.