1、精品文檔螺絲攻牙鉆孔徑和滾絲徑對照表公制粗螺紋美制粗螺紋規格標準徑2級牙鉆孔徑規格（UNC）標準徑2級牙鉆孔徑最大最小最大最小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簽名檔:螺絲攻牙鉆孔徑和滾絲徑對照表公制細螺紋美制細

6、螺紋規格標準徑2級牙鉆孔徑規格（UNC）標準徑2級牙鉆孔徑最大最小最大最小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螺絲攻牙鉆孔徑和滾絲徑對照表公制細螺紋美制細螺紋規格標準徑2級牙鉆孔徑規格（UNC）標準徑2級牙鉆孔徑最大最小最大最小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簽名檔:螺絲攻牙鉆孔徑和滾絲徑對照表公制擠壓絲攻鉆孔徑美

15、制擠壓絲攻鉆孔徑規格精度等級規格（UNC）精度等級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簽名檔:美制特細螺紋英制電器螺紋規格標準徑2級牙鉆孔徑規格鉆孔徑最大最小

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簽名檔:螺絲攻牙鉆孔徑和滾

19、絲徑對照表英制螺紋公制螺紋針車用螺紋規格(UNEF)鉆孔徑規格滾絲徑規格滾絲徑硬材軟材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簽名檔:英制管螺紋英制管螺紋美制管螺紋規

22、格標準徑鉆孔徑規格標準徑有交牙部之長 度（最 小）中之毋螺牙內徑標準 長度（最 小）中 之毋 螺牙 內徑規格鉆孔徑最大最小使用絞刀時不用絞刀時NPTNPS使用絞刀時不用絞刀時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