TAPS & DIES & CENTER DRILLS
螺丝攻,切牙丝板与中心钻咀
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螺丝攻牙钻孔径和滚造径对照表
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.
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ISO 9001 国际规格
J QA-1318 品质保证
2级牙孔径 精 度 等 级 规 格 标准径 最大 最小 规 格 G4-G6 G7-G8 G9
M1.0×0.25 0.750.785 0.729M1.0×0.250.860.88 -- M1.1×0.25 0.850.885 0.829M1.1×0.250.960.98 -- M1.2×0.25 0.950.985 0.929M1.2×0.251.061.08 -- M1.4×0.3 1.101.142 1.075M1.4×0.31.241.25 -- M1.6×0.35 1.251.321 1.221M1.6×0.351.411.43 -- M1.7×0.35 1.351.421 1.321M1.7×0.351.511.53 -- M1.8×0.35 1.451.521 1.421M1.8×0.351.611.63 -- M2.0×0.4 1.601.679 1.567M2.0×0.41.781.80 -- M2.2×0.45 1.751.838 1.713M2.2×0.451.951.98 -- M2.3×0.4 1.901.979 1.867M2.3×0.42.082.10 -- M2.5×0.45 2.102.138 2.013M2.5×0.452.252.28 -- M2.6×0.45 2.202.238 2.113M2.6×0.452.352.38 -- M3.0×0.5 2.502.599 2.459M3.0×0.52.732.75 -- M3.0×0.6 2.402.440 2.280M3.5×0.63.173.20 -- M3.5×0.6 2.903.010 2.850M4.0×0.73.623.65 3.69M4.0×0.7 3.303.422 3.242M5.0×0.84.564.60 4.64M4.0×0.75 3.253.326 3.106M6.0×1.05.455.50 5.55M4.5×0.75 3.803.878 3.688M7.0×1.06.456.50 6.55M5.0×0.8 4.204.334 4.134M8.0×1.257.317.38 7.44M5.0×0.9 4.104.170 3.930M10×1.59.189.25 9.32M6.0×1. 0 5.005.153 4.917M10×1.259.319.38 9.44M7.0×1.0 6.006.153 5.917M12×1.7511.0411.12 11.21M8.0×1.25 6.806.912 6.647M12×1.2511.3111.38 11.44M9.0×1.25 7.807.912 7.647M10×1.5 8.508.676 8.376M11×1.5 9.509.676 9.376M12×1.75 10.3010.441 10.106M14×2.0 12.0012.210 11.835M16×2.0 14.0014.210 13.835注: 迫牙丝攻之钻孔径,在上表所列之数
螺丝攻牙钻孔径和滚造径对照表 公 制 粗 螺 纹
规格 标准径 2级牙钻孔径 规格 标准径 2级牙钻孔径
最大 最小 最大 最小
M1.0╳0.25 0.75 0.785 0.729 M5.0╳0.8 4.20 4.334 4.134
M1.1╳0.25 0.85 0.885 0.829 M6.0╳1.0 5.00 5.153 4.917
M1.2╳0.25 0.95 0.985 0.929 M7.0╳1.0 6.00 6.153 5.917
M1.4╳0.3 1.10 1.142 1.075 M8.0╳1.25 6.80 6.912 6.647
M1.6╳0.35 1.25 1.321 1.221 M9.0╳1.25 7.80 7.912 7.647
M1.7╳0.35 1.35 1.421 1.321 M10╳1.5 8.50 8.676 8.376
M1.8╳0.35 1.45 1.521 1.421 M11╳1.5 9.50 9.676 9.376
M2.0╳0.4 1.60 1.679 1.567 M12╳1.75 10.30 10.441 10.106
M2.2╳0.45 1.75 1.838 1.713 M14╳2.0 12.00 12.210 11.835
M2.3╳0.4 1.90 1.979 1.867 M16╳2.0 14.00 14.210 13.835
M2.5╳0.45 2.10 2.138 2.013 M18╳2.5 15.50 15.744 15.294
M2.6╳0.45 2.20 2.238 2.113 M20╳2.5 17.50 17.744 17.294
M3.0╳0.5 2.50 2.599 2.459 M22╳2.5 19.50 19.744 19.294
M3.5╳0.6 2.90 3.010 2.850 M24╳3.0 21.00 21.252 20.752
攻 牙 前 使 用 钻 头 之 孔 径 对 照 表
公制牙60º 钻头孔径 公制牙60º 钻头孔径 美制牙60º 钻头孔径 英制牙55º 钻头孔径
M 1 × 0.25
" 1.2×0.25
" 1.4×0.3
" 1.6×0.35
" 1.7×0.35
" 2 ×0.4 0.78
0.98
1.14
1.32
1.42
1.67 M 12 ×1.75
" 13 ×1
" 13 ×1.5
" 14 ×1
" 14 ×1.5
" 14 ×2 10.5
12.05
11.55
13.2
12.7
12.3 No. 1 - 64UNC
" 2 - 56 "
" 3 - 48 "
" 4 - 40 "
" 5 - 40 "
" 6 - 32 " 1.51
1.8
2.06
2.3
2.64
2.82 W 1/16 - 60
" 3/32 - 48
" 1/8 - 40
" 5/32 - 32
" 3/16 - 24
" 7/32 - 24 1.3
1.9
2.6
3.2
3.8
4.5
M 2.3×0.4
" 2.5×0.45
" 2.6×0.45
" 3 ×0.35
" 3 ×0.5
" 3 ×0.6 1.97
2.12
2.22
2.72
2.59
2.42 M 15 ×1
" 15 ×1.5
" 16 ×1
" 16 ×1.5
" 16 ×2
" 17 ×1 14.2
13.7
15.2
14.7
14.3
16.2 No. 8 - 32 UNC
" 10 - 24 "
" 12 - 24 "
1/4 - 20 "
5/15 - 18 "
3/8 - 16 " 3.5
本表所推选之钻头孔下，由于钻头的形状及当之处，应视实际状况最大最小最大最小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.2-56UNC1.942.652.60M1.1*0.250.850.8850.829M12*0.511.5011.52011.400M1.1*0.250.960.98No.3-482.233.253.20M1.2*0.250.950.9850.929M14*1.512.5012.67612.376M1.2*0.251.061.08No.4-402.503.753.70M1.4*0.31.101.1421.075M14*1.013.0013.15312.917M1.4*0.31.241.25No.5-402.835.105.00M1.6*0.351.251.3211.221M15*1.513.5013.67613.376M1.6*0.351.411.43No.6-323.076.606.50M1.7*0.351.351.4211.321M15*1.014.0014.15313.917M1.7*0.351.511.53No.8-323.733.778.007.90M1.8*0.351.451.5211.421M16*1.514.5014.67614.376M1.8*0.351.611.63No.10-244.244.309.409.30M2.0*0.41.601.6791.567M16*1.015.0015.15314.917M2*0.41.781.80No.12-244.904.9610.7010.50M2.2*0.451.751.8381.713M17*1.515.5015.67615.376M2.2*0.451.951.981/4 -205.7212.3012.00M2.3*0.41.901.9791.867M17*1.016.0016.15315.917M2.3*0.42.082.105/16 -187.2413.7013.50M2.5*0.452.102.1382.013M18*2.016.0016.21015.835M2.5*0.452.252.283/8 -168.7416.7016.50M2.6*0.452.202.2382.113M18*1.516.5016.67616.376M2.6*0.452.352.387/16 -1410.2019.5019.30M3.0*0.52.502.5992.459M18*1.017.0017.15316.917M3.0*0.52.732.751/2 -1311.2722.4022.00M3.0*0.62.402.4402.280M20*2.018.0018.21017.835M3.5*0.63.173.20No.2-64UNF1.9725.0024.80M3.5*0.62.903.0102.850M20*1.518.5018.67618.376M4.0*0.73.623.653.69No.3-562.2728.3028.00M4.0*0.73.303.4223.242M20*1.019.0019.15318.917M5.0*0.84.564.604.64No.4-482.56M4.0*0.753.253.3263.106M22*2.020.0020.21019.835M6.0*1.05.455.505.55No.5-442.86M4.5*0.753.803.8783.688M22*1.520.5020.67620.376M7.0*1.06.456.506.55No.6-403.16M5.0*0.84.204.3344.134M22*1.021.0021.15320.917M8.0*1.257.317.387.44No.8-363.78M5.0*0.94.104.1703.930M24*2.022.0022.21021.835M10*1.59.189.259.32No.10-324.394.43M6.0*1.05.005.1534.917M24*1.522.5022.67622.376M10*1.259.319.389.44No.12-284.995.04SM1/8-40M7.0*1.06.006.1535.917M24*1.023.0023.15322.917M12*1.7511.0411.1211.211/4 -285.855.90SM1/8-44M8.0*1.256.806.9126.647M25*2.023.0023.21022.835M12*1.2511.3111.3811.445/16 -247.367.41SM9/64 -40M9.0*1.257.807.9127.647M25*1.523.5023.67623.3763/8 -249.00SM11/64-40M10*1.58.508.6768.376M25*1.024.0024.15323.9177/16 -2010.48SM3/16 -32M11*1.59.509.6769.376M26*1.524.5024.67624.3761/2 -2012.07SM3/16 -28M12*1.7510.3010.44110.106M27*2.025.0025.21024.835SM7/32 -32M14*2.012.0012.21011.835M27*1.525.5025.67625.376SM15/64-28M16*2.014.0014.21013.835M27*1.026.0026.15325.917SM1/4-40M18*2.515.5015.74415.294M28*2.026.0026.21025.835SM1/4-28M20*2.517.5017.74417.294M28*1.526.5026.67626.376SM9/32 -28M22*2.519.5019.74419.294M28*1.027.0027.15326.917规格最大SM11/32-28M24*3.021.0021.25220.752M30*3.027.0027.25226.752(UNC)最大最小PS 1/16 - 286.506.632SM3/8-28M27*3.024.0024.25223.752M30*2.028.0028.21027.835 (螺丝牙外径)PS 1/8 - 288.508.637SM7/16 -28M30*3.526.5026.77126.211M30*1.528.5028.67628.376No.1-64(1.854)1.551.5821.425PS 1/4 - 1911.4011.549M30*1.029.0029.15328.917No.2-56(2.184)1.801.8711.695PS 3/8 - 1915.0015.054M32*2.030.0030.21029.835No.3-48(2.515)2.102.1461.941PS 1/2 - 1418.5018.773M32*1.530.5030.67630.376No.4-40(2.845)2.302.3852.157PS 3/4 - 1424.0024.259M33*3.030.0030.25229.752No.5-40(3.175)2.602.6972.487PS 1 - 1130.2030.471M33*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)3.403.5303.302PS 1-1/2 - 1144.8045.025M1.0*0.20.800.8210.783M35*1.533.5033.67633.376No.10-24(4.826)3.903.9623.683PS 2 - 1156.5056.836M1.1*0.20.900.9210.883M36*3.033.0033.25232.752No.12-24(5.486)4.504.5974.344M1.2*0.21.001.0210.983M36*2.034.0034.21033.8351/4 - 205.105.2574.979M1.4*0.21.201.2211.183M36*1.534.5034.67634.3765/16 - 186.606.7316.401M1.6*0.21.401.4211.3833/8 - 168.008.1537.798M1.7*0.21.451.5001.4607/16 - 149.409.5509.144M1.8*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 -286.106.206.2446.38M2.2*0.251.951.9851.929规格5/8 - 1113.6012.86813.386PT 1/8 -288.108.208.4298.39M2.3*0.252.052.0612.001(UNF)最大最小3/4 - 1016.5018.84016.307PT 1/4 -1910.7011.0010.96211.2M2.5*0.352.202.2212.1217/8 - 919.5019.76119.177PT 3/8 -1914.2014.5014.44814.7M2.6*0.352.202.2462.186No.0-80(1.524)1.251.3051.1821 - 822.2022.60621.971PT 1/2 -1417.6018.0017.97918.3M3.0*0.352.702.7212.621No.1-72(1.854)1.551.6121.4741-1/8 - 725.0025.34924.638PT 3/4 -1423.0023.5023.37823.7M3.5*0.353.203.2213.121No.2-64(2.184)1.851.9121.7561-1/4 - 728.2028.52427.813PT 1 -1129.0029.5029.45929.8M4.0*0.53.503.5993.459No.3-56(2.515)2.102.1972.0251-3/8 - 630.8031.11530.353PT 1-1/4 -1137.5038.0037.97638.3M4.5*0.54.004.0993.959No.4-48(2.845)2.402.4582.2711-1/2 - 634.0034.29033.528PT 1-1/2 -1143.4044.0043.86944.2M5.0*0.54.504.5994.459No.5-44(3.175)2.702.7402.5511-3/4 - 539.5039.82738.964PT 2 -1154.9055.5055.41255.8M5.5*0.55.005.0994.959No.6-40(3.505)2.903.0222.8202 - 4-1/245.2045.59344.679M6.0*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)4.604.7244.496M7.0*0.56.506.5506.4001/4 -285.505.5885.360M8.0*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)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 - 276.106.25M9.0*1.08.008.1537.9171/2 -2011.5011.60711.3291/4 - 325.605.6905.4861/8 -278.338.43M9.0*0.758.308.3788.1889/16 -1812.9013.08112.7515/16 - 327.107.2647.0871/4 -1810.7211.13M10*1.258.808.9128.4675/8 -1814.5014.68114.3513/8 - 328.708.8658.6613/8 -1814.2714.27M10*1.09.009.1538.9173/4 -1617.5017.67817.3237/16 - 2810.2010.33810.1351/2 -1417.4817.86M10*0.759.309.3789.1887/8 -1420.5020.67520.2701/2 - 2811.8011.93811.7093/4 -1422.6323.01M10*0.59.509.5209.4001 -1223.2023.57123.1149/16 - 2413.2013.38613.1321 -11-1/228.5828.98M11*1.010.0010.1539.9171-1/8 -1226.5026.74626.2895/8 - 2414.8014.98614.7321-1/4 -11-1/237.3137.69M11*0.7510.3010.37810.1881-1/4 -1229.5029.92129.4643/4 - 2017.8017.95817.6781-1/2 -11-1/243.6644.04M12*1.510.5010.67610.3761-3/8 -1232.8033.09632.6397/8 - 2021.0021.13320.8532 -11-1/255.5855.96M12*1.2510.8010.91210.6471-1/2 -1236.036.27135.8141 - 2024.0024.30824.028标准径2级牙钻孔径美 制 特 细 螺 纹规 格
