螺丝攻牙钻孔径和滚丝径对照表上课讲义

1、精品文档螺丝攻牙钻孔径和滚丝径对照表公制粗螺纹美制粗螺纹规格标准径2级牙钻孔径规格（UNC）标准径2级牙钻孔径最大最小最大最小M1.0X0.250.750.7850.729NO.1-64(1.854)1.551.5821.425M1.1 X0.250.850.8850.829NO.2-56(2.184)1.801.8711.695M1.2X0.250.950.9850.985NO.3-48(2.515)2.102.1461.941M1.4X0.31.101.1421.075NO.4-40(2.845)2.302.3852.157M1.6X0.351.251.3211.221NO.5-40(3.

2、175)2.602.6972.487M1.7X0.351.351.4211.321NO.6-32(3.505)2.802.8952.642M1.8X0.351.451.5211.421NO8-32(4.166)3.403.533.302M2.0X0.41.601.6791.567NO.10-24(4.826)3.903.9623.683M2.2X0.451.751.8381.713NO.12-24(5.486)4.504.5974.344M2.3X0.41.901.9791.8671/4-205.105.2574.979M2.5X0.452.102.1382.0135/16-186.606.7

3、316.401M2.6X0.452.202.2382.1133/8-168.008.1537.798M3.0X0.52.502.5992.4597/16-149.409.559.144M3.0X0.62.402.4402.2801/2-1310.8011.02310.592M3.5X0.62.903.0102.8509/16-1212.2012.44611.989M4.0X0.73.303.4223.2425/8-1113.6012.86813.386M4.0X0.753.253.3263.1063/4-1016.5018.84016.307M4.5X0.753.803.8783.6887/8

4、-919.5019.76119.177M5.OX0.84.204.3344.134122.2022.60621.971M5.OX0.94.104.1703.9301-1/8-725.0025.34924.638M6.0X1.05.005.1534.9171-1/4-728.2028.52427.813M7.0X1.06.006.1535.9171-3/8-630.8031.11530.353M8.0X1.256.806.9126.6471-1/2-634.0034.29033.528M9.0X1.257.807.9127.6471-3/4-539.5039.82738.964M10X1.58.

5、508.6768.3762-4-1/245.2045.59344.679M11X1.59.509.6769.376M12X1.7510.3010.44110.106M14X2.012.0012.21011.835M16X2.014.0014.21013.835M18X2.515.5015.74415.294M20X2.517.5017.74417.294M22X2.519.5019.74419.294M24X3.021.0021.25220.752M27X3.024.0024.25223.752M30X3.526.5026.77126.211签名档:螺丝攻牙钻孔径和滚丝径对照表公制细螺纹美制细

6、螺纹规格标准径2级牙钻孔径规格（UNC）标准径2级牙钻孔径最大最小最大最小M1.0M.20.800.8210.783N0.0-80(1.524)1.251.3051.182M1.1 X0.20.900.9210.883NO.1-72(1.854)1.551.6121.474M1.2M.21.001.0210.983NO.2-64(2.184)1.851.9121.756M1.4M.21.201.2211.183NO.3-56(2.515)2.102.1972.025M1.6M.21.401.4211.383NO.4-48(2.845)2.402.4582.271M1.7M.21.451.500

7、1.460NO.5-44(3.175)2.702.7402.551M1.8M.21.601.6211.583NO.6-40(3.505)2.903.0222.820M2.0M.251.751.7851.729NO.8-36(4.166)3.503.6063.404M2.2M.251.951.9851.929NO.10-32(4.826)4.104.1653.963M2.3M.252.052.0612.001NO.12-28(5.846)4.604.7244.496M2.5M.352.202.2212.1211/4-285.505.5885.360M2.6M.352.202.2462.1865/

8、16-246.907.0356.782M3.0M.352.702.7212.6213/8-248.508.6368.382M3.5M.353.203.2213.1217/16-209.9010.0339.729M4.0M.53.503.5993.4591/2-2011.5011.60711.329M4.5M.54.004.0993.9599/16-1812.9013.08112.751M5.0M.54.504.5994.4595/8-1814.5014.68114.351M5.5M.55.005.0994.9593/4-1617.5017.67817.323M6.0M.755.305.3785

9、.1887/8-1420.5020.67520.270M6.0M.55.505.5505.4001-1223.2023.57123.114M7.0M.756.306.3786.1881-1/8-1226.5026.74626.289M7.0M.56.506.5506.4001-1/4-1229.5029.92129.464M8.0X1.07.007.1536.9171-3/8-1232.8033.09632.639M8.0M.757.307.3787.1881-1/2-1236.0036.27135.814M8.0M.57.507.5207.400M9.0X1.08.008.1537.917M

10、9.0M.758.308.3788.188M10X 1.258.808.9128.647M10X 1.09.009.1538.917M10X 0.759.309.3789.188M10X 0.59.509.5209.400螺丝攻牙钻孔径和滚丝径对照表公制细螺纹美制细螺纹规格标准径2级牙钻孔径规格（UNC）标准径2级牙钻孔径最大最小最大最小M11X 1.010.0010.1539.917M11X 0.7510.3010.37810.188 1j1:M12X 1.510.5010.67610.376M12X 1.2510.8010.91210.647!1iM12X 1.011.0011.15310

11、.917j jM12X 0.511.5011.52011.400M14X 1.512.5012.67612.376sM14X 1.013.0013.15312.917!M15X 1.513.5013.67613.3761iM15X 1.014.0014.15313.917jiM16X 1.514.5014.67614.3761M16X 1.015.0015.15314.9171M17X 1.515.5015.67615.376! j jM17X 1.016.0016.15315.917jM18X 2.016.0016.21015.835M18X 1.516.5016.67616.3763J!M

12、18X 1.017.0017.15316.917iM2(K 2.018.0018.21017.835iiiM2(K 1.518.5018.67618.376j:M2(K 1.019.0019.15318.917M22X 2.020.0020.21019.835!M22X 1.520.5020.67620.376j jM22X 1.021.0021.15320.917 1j1:M24X 2.022.0022.21021.835M24X 1.522.5022.67622.376!1iM24X 1.023.0023.15322.917j jM25X 2.023.0023.21022.835M25X

13、1.523.5023.67623.376sM25X 1.024.0024.15323.917!M26X 1.5 i 124.5024.67624.3761iM2” 2.025.0025.21024.835jiM2 1.525.5025.67625.3761M2 1.026.0026.15325.9171M28X 2.026.0026.21025.835! j jM28X 1.526.5026.67626.376jM28X 1.027.0027.15326.917M30X 3.027.0027.25226.7523J!M30X 2.028.0028.21027.835iM30X 1.528.50

14、28.67628.376iiiM30X 1.029.0029.15328.917j:M32X 2.030.0030.21029.835M32X 1.530.5030.67630.376!1M33X 3.030.0030.25229.752j jM33X 2.031.0031.21030.835M33X 1.531.5031.67631.376M35X 1.533.5033.67633.376M36X 3.033.0033.25232.752M36X 2.034.0034.21033.835M36X 1.534.5034.67634.376签名档:螺丝攻牙钻孔径和滚丝径对照表公制挤压丝攻钻孔径美

15、制挤压丝攻钻孔径规格精度等级规格（UNC）精度等级G4-G6G7-G8G9G4-G6G7-G8G9M1.0M.250.860.88一NO.2-56UNC1.94一一M1.1 X0.250.960.98一NO.3-482.23一一M1.2M.251.061.08一NO.4-402.50一M1.4X5.31.241.25一NO.5-402.83一一M1.6M.351.411.43一NO.6-323.07一一M1.7M.351.511.53一NO.8-323.733.77一M1.8M.351.611.63一NO.10-244.244.3一M2.0M.41 11.781.80一NO.12-244.90

16、4.96一M2.2M.451.951.98一1/4-20一5.72一M2.3M.42.082.10一5/16-18一7.24一M2.5M.452.252.28一3/8-16一8.748.81s rM2.6M.452.352.38一7/16-14一10.2010.30M3.0M.52.732.75一1/2-13一11.2711.82M3.5X).63.173.20一NO.2-64UNF1.97一一M4.0M.73.623.653.69NO.3-562.27一M5.0M.84.564.604.64NO.4-482.56一一M6.0X1.05.455.505.55NO.5-442.86一一M7.0X

17、1.06.456.506.55NO.6-403.16一一M8.0X1.257.317.387.44NO.8-363.78一一M10X 1.59.189.259.32NO.10-324.394.43一M10X 1.259.319.389.44NO.12-284.995.04一M12X 1.7511.0411.1211.211/4-285.855.90一M12X 1.2511.3111.3811.445/16-247.367.41一3/8-24一9.00一i7/16-20一10.4810.541/2-20一12.0712.13签名档:美制特细螺纹英制电器螺纹规格标准径2级牙钻孔径规格钻孔径最大最小

18、NO.12-324.704.8264.6232BA4.0-4.21/4-325.605.6905.4863BA5/16-327.107.2647.0874BA3.0-3.23/8-328.708.8658.6615BA2.7-2.87/16-2810.2010.33810.1356BA2.4-2.51/2-2811.8011.93811.7099/16-2413.2013.38613.1325/8-2414.8014.98614.7323/4-2017.8017.95817.6787/8-2021.0021.13320.8531-2024.0024.30824.028签名档:螺丝攻牙钻孔径和滚

19、丝径对照表英制螺纹公制螺纹针车用螺纹规格(UNEF)钻孔径规格滚丝径规格滚丝径硬材软材W 1/8 - 402.652.60M3X 0.52.63-2.60SM1/8-402.735-2.688W 5/32 - 323.253.20M3.0X0.62.56-2.53SM1/8-442.769-2.722W 3/16 - 243.753.70M3.5X0.63.06-3.03SM9/64-403.128-3.083W 1/4 - 205.105.00M4.0X0.73.49-3.45SM11/64-403.855-3.805W 5/16 -186.606.50M4.0X0.753.45-3.41S

20、M3/16-324.205-4.155W 3/8 -168.007.90M4.5X0.753.96-3.92SM3/16-284.143-4.093W 7/16 -149.409.30M5.0X0.84.43-4.38SM7/32-325.003-4.955W 1/2 - 1210.7010.50M5.0X0.94.36-4.31SM15/64-285.325-5.570W 9/16 - 1212.3012.00M6.0X1.05.30-5.25SM1/4-405.890-5.735W 5/8 - 1113.7013.50M7.0X1.06.30-6.25SM1/4-285.721-5.366

21、W 3/4 - 1016.7016.50M8.0X1.07.28-7.23SM9/32-286.508-6.648W 7/8 - 919.5019.30M8.0X1.257.12-7.07SM11/32-288.092-8.432W1 - 822.4022.00SM3/8-288.880-8.015W 1-1/8 - 725.0024.80SM7/16-2810.466-10.401W 1 - 1/4 - 728.3028.00SM7/16-1610.037-9.967SM1/2-2011.819-11.749SM9/26-2013.400-13.425签名档:英制管螺纹英制管螺纹美制管螺纹规

22、格标准径钻孔径规格标准径有交牙部之长 度（最 小）中之毋螺牙内径标准 长度（最 小）中 之毋 螺牙 内径规格钻孔径最大最小使用绞刀时不用绞刀时NPTNPS使用绞刀时不用绞刀时PS 1/16 -286.506.6326.490PT 1/16 -286.106.206.2446.3841/16 - 276.106.256.35PS 1/8 -288.508.6378.495PT 1/8 -288.108.208.2498.3881/8 - 278.338.438.74PS 1/4 -1911.4011.54911.341PT 1/4 -1910.7011.0010.96211.1741/4 - 1810.7211.1311.13PS 3/8 -1915.0015.05414.846PT 3/8 -1914.2014.5014.44814.6583/8 - 1814.2714.2714.68PS 1/2 -1418.5018.77318.489PT 1/2 -1417.6018.0017.97918.2631/2 - 1417.4817.8618.26PS 3/4-1424