螺丝攻牙钻孔径和滚丝径对照表
螺丝攻牙钻孔径和滚造径对照表
針車用螺紋 規 格 滾造徑
SM 1/8 SM 1/8 SM 9/64 SM 11/64 SM 3/16 SM 3/16 SM 7/32 SM 15/64 SM 1/4 SM 1/4 SM 9/32 SM 11/32 SM 3/8 SM 7/16 SM 7/16 SM 1/2 -40 -44 -40 -40 -32 -28 -32 -28 -40 -28 -28 -28 -28 -28 -16 -20 2.735-2.688 2.769-2.722 3.128-3.083 3.855-3.805 4.205-4.155 4.143-4.093 5.003-4.955 5.325-5.570 5.890-5.735 2.721-5.366 6.508-6.648 8.092-8.432 8.880-8.015 10.466-10.401 10.037-9.967 11.819-11.749
英 制 細 螺 紋 滾造徑 規格(UNF)
NO.5 NO.6 NO.8 NO.10 NO.12 1/4 5/16 3/8 7/16 1/2 -40 2.73 - 2.70 -32 3.05 - 3.02 -32 3.66 - 3.63 -24 4.26 - 4.22 -24 4.84 - 4.80 -20 5.72 - 5.68 -18 7.20 - 7.16 -16 8.79 - 8.74 -14 10.23 - 10.18 -13 11.82 - 11.76
超全螺纹攻牙钻孔直径和滚造直径对照表
M27×3.0
24.00
24.252
23.752
M30×3.5
26.50
26.771
26.211
公 制 细 螺 纹
规格
标准径
2级牙钻孔径
最大
最小
M1.0×0.2
0.80
0.821
0.783
M1.1×0.2
0.90
0.921
0.883
M1.2×0.2
1.00
1.021
0.983
M1.4×0.2
M24×1.0
23.00
23.153
22.917
M25×2.0
23.00
23.210
22.835
M25×1.5
23.50
23.676
23.376
M25×1.0
24.00
24.153
23.917
M26×1.5
24.50
24.676
24.376
M27×2.0
25.00
25.210
24.835
M27×1.5
M5.0×0.8
4.56
4.60
4.64
M6.0×1.0
5.45
5.50
5.55
M7.0×1.0
6.45
6.50
6.55
M8.0×1.25
7.31
7.38
7.44
M10×1.5
9.18
9.25
9.32
M10×1.25
9.31
9.38
9.44
M12×1.75
11.04
11.12
11.21
M12×1.25
NO.0-80(1.524)
螺丝攻牙钻孔径和滚造径对照表
精 度 等级
G4-G6 G7-G8 G9
0.86
0.88 -
0.96
0.98 -
1.06
1.08 -
1.24
1.25 -
1.41
1.43 -
1.51
1.53 -
1.61
1.63 -
1.78
1.80 -
1.95
1.98 -
2.08
2.10 -
2.25
2.28 -
2.35
2.38 -
2.73
2.75 -
螺丝攻牙钻孔径和滚造径对照表
公制粗螺纹
规格
M1.0*0.25 M1.1*0.25 M1.2*0.25 M1.4*0.30 M1.6*0.35 M1.7*0.35 M1.8*0.35 M2.0*0.40 M2.2*0.45 M2.3*0.40 M2.5*0.45 M2.6*0.45 M3.0*0.50 M3.0*0.60 M3.5*0.60 M4.0*0.70 M4.0*0.75 M4.5*0.75 M5.0*0.80 M5.0*0.90 M6.0*1.00 M7.0*1.00 M8.0*1.25 M9.0*1.25 M10*1.50 M11*1.50 M12*1.75 M14*2.00 M16*2.00 M18*2.50 M20*2.50 M22*2.50 M24*3.00 M27*3.00 M30*3.50
2.440 2.280
3.010 2.850
3.422 3.242
3.326 3.106
3.878 3.688
4.334 4.134
4.170 3.930
5.153 4.917
6.153 5.917
6.912 6.647
螺丝攻牙钻孔径和滚造径对照表
精度等级 G4－G6 G7－G8 G9
0.86 0.88 0.96 0.98 1.06 1.08 1.24 1.25 1.41 1.43 1.51 1.53 1.61 1.63 1.78 1.80 1.95 1.98 2.08 2.10 2.25 2.28 2.35 2.38 2.73 2.75 3.17 3.20 3.62 3.65 3.69 4.56 4.60 4.64 5.45 5.50 5.55 6.45 6.50 6.55 7.31 7.38 7.44 9.18 9.25 9.32 9.31 9.38 9.44 11.04 11.12 11.21 11.31 11.38 11.44
公制粗螺纹
公制细螺纹
无沟丝攻钻孔径
英制螺纹
美制粗螺纹
规格
标准径
2级牙钻孔径 最大 最小
规格
标准径
M1.0×0.25 M1.1×0.25 M1.2×0.25 M1.4×0.30 M1.6×0.35 M1.7×0.35 M1.8×0.35 M2.0×0.40 M2.2×0.45 M2.3×0.40
0.75 0.85 0.95 1.10 1.25 1.35 1.45 1.60 1.75 1.90
0.785 0.885 0.985 1.142 1.321 1.421 1.521 1.679 1.838 1.979
0.729 0.829 0.929 1.075 1.221 1.321 1.421 1.567 1.713 1.867
M12×1.00 M12×0.50 M14×1.50 M14×1.00 M15×1.50 M15×1.00 M16×1.50 M16×1.00 M17×1.50 M17×1.00
28.210 27.835
公司使用螺丝攻牙孔径对照表
M1.0*0.25 0.86 0.88 M1.1*0.25 0.96 0.98 M1.2*0.25 1.06 1.08 M1.4*0.30 1.24 1.25 M1.6*0.35 1.41 1.43 M1.7*0.35 1.51 1.53 M1.8*0.35 1.61 1.63 M2.0*0.40 1.78 1.80 M2.2*0.45 1.95 1.98 M2.3*0.40 2.08 2.10 M2.5*0.45 2.25 2.28 M2.6*0.45 2.35 2.38 M3.0*0.50 2.73 2.75 M3.5*0.60 3.17 3.20 M4.0*0.70 3.62 3.65 3.69 M5.0*0.80 4.56 4.60 4.64 M6.0*1.00 5.45 5.50 5.55 M7.0*1.00 6.45 6.50 6.55 M8.0*1.25 7.31 7.38 7.44 M10*1.50 9.18 9.25 9.32 M10*1.25 9.31 9.38 9.44 M12*1.75 11.04 11.12 11.21 M12*1.25 11.31 11.38 11.44 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, 亦精增减若干。
No 1-64(1.854) No 2-56(2.184) No 3-48(2.515) No 4-40(2.845) No 5-40(3.175) No 6-32(3.505) No 8-32(4.166) No 10-24(4.826) No 12-24(5.486) 2001-4-20 5/16 - 18 3/8 - 16 7/16 - 14 1/2 - 13 9/16 - 12 5/8 - 11 3/4 - 10 7/8 - 9 1 - 8 1-1/8 - 7 1-1/4 - 7 1-3/8 - 6 1-1/2 - 6 1-3/4 - 5 2 - 4-1/2
常用公英美制螺纹孔径和滚造径对照表
标准径
15.50 16.00 16.00 16.50 17.00 18.00 18.50 19.00 20.00 20.50 21.00 22.00 22.50 23.00 23.00 23.50 24.00 24.50 25.00 25.50 26.00 26.00 26.50 27.00 27.00 28.00 28.50 29.00 30.00 30.50 30.00 31.00 31.50 33.00 34.00 34.50 33.50
2 级牙钻孔径 最大 最小 0.821 0.783 0.921 0.883 1.021 0.983 1.221 1.183 1.421 1.383 1.500 1.460 1.621 1.583 1.785 1.729 1.985 1.929 2.061 2.001 2.221 2.121 2.246 2.186 2.721 2.621 3.221 3.121 3.599 3.459 4.099 3.959 4.599 4.459 5.099 4.959 5.378 5.188 5.550 5.400 6.378 6.188 6.550 6.400 7.153 6.917 7.378 7.188 7.520 7.400 8.153 7.917 8.378 8.188 8.912 8.647 9.153 8.917 9.378 9.188 9.520 9.400 10.153 9.917 10.378 10.188 10.676 10.376 11.153 10.917 11.520 11.400 12.676 12.376 13.153 12.917 13.676 13.376 14.153 13.917 14.676 14.376 15.153 14.917
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螺丝攻牙径对照表
SM 1/2 -20
11.819 -
SM 9/16 -20
13.400 -
公 制 螺 纹
规格
滚造径
M3.0*0.5
2.63 - 2.60
M3.0*0.6
2.56 - 2.53
M3.5*0.6
3.06 - 3.03
M4.0*0.7
3.49 - 3.45
M4.5*0.75
3.96 - 3.92
M5.0*0.8
5.099
4.959 M25*2.0
5.378
5.188 M25*1.5
5.55
5.4
M25*1.0
6.378
6.188 M26*1.5
6.55
6.4
M27*2.0
7.153
6.917 M27*1.5
7.378
7.188 M27*1.0
7.52
7.4
M28*2.0
8.153
7.917 M28*1.5
规格
M1.0*0.25 M1.1*0.25 M1.2*0.25 M1.4*0.3 M1.6*0.35 M1.7*0.35 M1.8*0.35 M2.0*0.4 M2.2*0.45 M2.3*0.4 M2.5*0.45 M2.6*0.45 M3.0*0.5 M3.5*0.6 M4.0*0.7 M4.5*0.75
SM 1/4 -40 5.890 - 5.735
SM 1/4 -28 5.721 - 5.366
SM 9/32 -28 6.508 - 6.648
SM11/32 -28 8.092 - 8.432
SM 3/8 -28 8.880 - 8.015SM 7/ຫໍສະໝຸດ 6 -2810.466 -
螺丝攻牙钻孔径和滚造径对照表
最大最小最大最小M1.0×0.250.750.7850.729NO.1-64(1.854) 1.55 1.582 1.425M1.1×0.250.850.8850.829NO.2-56(2.184) 1.80 1.871 1.695M1.2×0.250.950.9850.985NO.3-48(2.515) 2.10 2.146 1.941M1.4×0.3 1.10 1.142 1.075NO.4-40(2.845) 2.30 2.385 2.157M1.6×0.35 1.25 1.321 1.221NO.5-40(3.175) 2.60 2.697 2.487M1.7×0.35 1.35 1.421 1.321NO.6-32(3.505) 2.80 2.895 2.642M1.8×0.35 1.45 1.521 1.421NO8-32(4.166) 3.40 3.53 3.302M2.0×0.4 1.60 1.679 1.567NO.10-24(4.826) 3.90 3.962 3.683M2.2×0.45 1.75 1.838 1.713NO.12-24(5.486) 4.50 4.597 4.344M2.3×0.4 1.90 1.979 1.8671/4-20 5.10 5.257 4.979M2.5×0.45 2.10 2.138 2.0135/16-18 6.60 6.731 6.401M2.6×0.45 2.20 2.238 2.1133/8-168.008.1537.798M3.0×0.5 2.50 2.599 2.4597/16-149.409.559.144M3.0×0.6 2.40 2.440 2.2801/2-1310.8011.02310.592M3.5×0.6 2.90 3.010 2.8509/16-1212.2012.44611.989M4.0×0.7 3.30 3.422 3.2425/8-1113.6012.86813.386M4.0×0.75 3.25 3.326 3.1063/4-1016.5018.84016.307M4.5×0.75 3.80 3.878 3.6887/8-919.5019.76119.177M5.0×0.8 4.20 4.334 4.134122.2022.60621.971M5.0×0.9 4.10 4.170 3.9301-1/8-725.0025.34924.638M6.0×1.0 5.00 5.153 4.9171-1/4-728.2028.52427.813M7.0×1.0 6.00 6.153 5.9171-3/8-630.8031.11530.353M8.0×1.25 6.80 6.912 6.6471-1/2-634.0034.29033.528M9.0×1.257.807.9127.6471-3/4-539.5039.82738.964M10×1.58.508.6768.3762-4-1/245.2045.59344.679M11×1.59.509.6769.376M12×1.7510.3010.44110.106M14×2.012.0012.21011.835M16×2.014.0014.21013.835M18×2.515.5015.74415.294M20×2.517.5017.74417.294M22×2.519.5019.74419.294M24×3.021.0021.25220.752M27×3.024.0024.25223.752M30×3.526.5026.77126.211螺丝攻牙钻孔径和滚造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M1.0×0.20.800.8210.783NO.0-80(1.524) 1.25 1.305 1.182M1.1×0.20.900.9210.883NO.1-72(1.854) 1.55 1.612 1.474M1.2×0.2 1.00 1.0210.983NO.2-64(2.184) 1.85 1.912 1.756M1.4×0.2 1.20 1.221 1.183NO.3-56(2.515) 2.10 2.197 2.025M1.6×0.2 1.40 1.421 1.383NO.4-48(2.845) 2.40 2.458 2.271M1.7×0.2 1.45 1.500 1.460NO.5-44(3.175) 2.70 2.740 2.551M1.8×0.2 1.60 1.621 1.583NO.6-40(3.505) 2.90 3.022 2.820M2.0×0.25 1.75 1.785 1.729NO.8-36(4.166) 3.50 3.606 3.404M2.2×0.25 1.95 1.985 1.929NO.10-32(4.826) 4.10 4.165 3.963M2.3×0.25 2.05 2.061 2.001NO.12-28(5.846)4.60 4.724 4.496M2.5×0.35 2.20 2.221 2.1211/4-285.50 5.588 5.360M2.6×0.35 2.20 2.246 2.1865/16-246.907.035 6.782M3.0×0.35 2.70 2.721 2.6213/8-248.508.6368.382M3.5×0.35 3.20 3.221 3.1217/16-209.9010.0339.729M4.0×0.5 3.50 3.599 3.4591/2-2011.5011.60711.329M4.5×0.5 4.00 4.099 3.9599/16-1812.9013.08112.751M5.0×0.5 4.50 4.599 4.4595/8-1814.5014.68114.351M5.5×0.5 5.00 5.099 4.9593/4-1617.5017.67817.323M6.0×0.75 5.30 5.378 5.1887/8-1420.5020.67520.270M6.0×0.5 5.50 5.550 5.4001-1223.2023.57123.114M7.0×0.75 6.30 6.378 6.1881-1/8-1226.5026.74626.289M7.0×0.56.506.5506.4001-1/4-1229.5029.92129.464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M8.0×1.07.007.153 6.9171-3/8-1232.8033.09632.639M8.0×0.757.307.3787.1881-1/2-1236.0036.27135.814M8.0×0.57.507.5207.400M9.0×1.08.008.1537.917M9.0×0.758.308.3788.188M10×1.258.808.9128.647M10×1.09.009.1538.917M10×0.759.309.3789.188M10×0.59.509.5209.400M11×1.010.0010.1539.917M11×0.7510.3010.37810.188M12×1.510.5010.67610.376M12×1.2510.8010.91210.647M12×1.011.0011.15310.917M12×0.511.5011.52011.400M14×1.512.5012.67612.376M14×1.013.0013.15312.917M15×1.513.5013.67613.376M15×1.014.0014.15313.917M16×1.514.5014.67614.376M16×1.015.0015.15314.917M17×1.515.5015.67615.376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M17×1.016.0016.15315.917M18×2.016.0016.21015.835M18×1.516.5016.67616.376M18×1.017.0017.15316.917M20×2.018.0018.21017.835M20×1.518.5018.67618.376M20×1.019.0019.15318.917M22×2.020.0020.21019.835M22×1.520.5020.67620.376M22×1.021.0021.15320.917M24×2.022.0022.21021.835M24×1.522.5022.67622.376M24×1.023.0023.15322.917M25×2.023.0023.21022.835M25×1.523.5023.67623.376M25×1.024.0024.15323.917M26×1.524.5024.67624.376M27×2.025.0025.21024.835M27×1.525.5025.67625.376M27×1.026.0026.15325.917M28×2.026.0026.21025.835M28×1.526.5026.67626.376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M28×1.027.0027.15326.917M30×3.027.0027.25226.752M30×2.028.0028.21027.835M30×1.528.5028.67628.376M30×1.029.0029.15328.917M32×2.030.0030.21029.835M32×1.530.5030.67630.376M33×3.030.0030.25229.752M33×2.031.0031.21030.835M33×1.531.5031.67631.376M35×1.533.5033.67633.376M36×3.033.0033.25232.752M36×2.034.0034.21033.835M36×1.534.5034.67634.376规格标准径2级牙钻孔径规格（UNC）标准径2级牙钻孔径G4-G6G7-G8G9G4-G6G7-G8G9M1.0×0.250.860.88－NO.2-56UNC 1.94－－M1.1×0.250.960.98－NO.3-48 2.23－－M1.2×0.25 1.06 1.08－NO.4-40 2.50－－M1.4×0.3 1.24 1.25－NO.5-40 2.83－－M1.6×0.35 1.41 1.43－NO.6-32 3.07－－M1.7×0.35 1.51 1.53－NO.8-32 3.73 3.77－M1.8×0.35 1.61 1.63－NO.10-24 4.24 4.3－M2.0×0.4 1.78 1.80－NO.12-24 4.90 4.96－M2.2×0.45 1.95 1.98－1/4-20－ 5.72－M2.3×0.4 2.08 2.10－5/16-18－7.24－M2.5×0.45 2.25 2.28－3/8-16－8.748.81M2.6×0.45 2.35 2.38－7/16-14－10.2010.30M3.0×0.5 2.73 2.75－1/2-13－11.2711.82M3.5×0.6 3.17 3.20－NO.2-64UNF 1.97－－M4.0×0.7 3.62 3.65 3.69NO.3-56 2.27－－M5.0×0.8 4.56 4.60 4.64NO.4-48 2.56－－M6.0×1.0 5.45 5.50 5.55NO.5-44 2.86－－M7.0×1.0 6.45 6.50 6.55NO.6-40 3.16－－M8.0×1.257.317.387.44NO.8-36 3.78－－M10×1.59.189.259.32NO.10-32 4.39 4.43－M10×1.259.319.389.44NO.12-28 4.99 5.04－M12×1.7511.0411.1211.211/4-28 5.85 5.90－M12×1.2511.3111.3811.445/16-247.367.41－3/8-24－9.00－7/16-20－10.4810.541/2-20－12.0712.13螺丝攻牙钻孔径和滚造径对照表公制迫牙丝攻钻孔径美制迫牙丝攻钻孔径规格精度等级规格精度等级最大最小NO.12-32 4.70 4.826 4.6232BA 4.0-41/4 -32 5.60 5.690 5.4863BA 5/16 -327.107.2647.0874BA 3.0-33/8 -328.708.8658.6615BA 2.7-27/16 -2810.2010.33810.1356BA2.4-21/2 -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美制特细螺纹英制电器螺纹规格钻孔规格(UNEF)标准径2级牙钻孔径使用绞刀时不用绞刀时PS 1/16 - 28 6.50 6.632 6.490PT 1/16 - 28 6.10 6.20 6.244 6.3841/16 - 27 6.10 6.25 6.35PS 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 -1424.0024.25923.975PT 3/4 - 1423.0023.5023.37823.6633/4 - 1422.6323.0123.42PS 1 - 1130.2030.47130.111PT 1- 1129.0029.5029.45929.822 1 - 11-1/228.5828.9829.36PS 1-1/4 - 1138.8039.13238.772PT 1-1/4 - 1137.5038.0037.97638.3391-1/4-11-1/237.3137.6938.10PS 1-1/2 - 1144.8045.02544.665PT 1-1/2 - 1143.4044.0043.86944.2321-1/2-11-1/243.6644.0444.45PS 2 - 1156.5056.83656.476PT 2 - 1154.9055.5055.41255.8442 - 11 - 1/255.5855.9656.36钻孔径最大最小使用纹刀时不用纹刀时NPTNPS 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规格标准径钻孔径规格螺丝攻牙钻孔径和滚造径对照表英制管螺纹英制管螺纹美制管螺纹硬材软材W 1/8 - 40 2.65 2.60M3×0.5 2.63-2.60SM1/8-40 2.735-2.688W 5/32 - 32 3.25 3.20M3.0×0.6 2.56-2.53SM1/8-44 2.769-2.722W 3/16 - 24 3.75 3.70M3.5×0.6 3.06-3.03SM9/64-40 3.128-3.083W 1/4 - 20 5.10 5.00M4.0×0.7 3.49-3.45SM11/64-40 3.855-3.805W 5/16 - 18 6.60 6.50M4.0×0.75 3.45-3.41SM3/16-32 4.205-4.155W 3/8 - 168.007.90M4.5×0.75 3.96-3.92SM3/16-28 4.143-4.093W 7/16 - 149.409.30M5.0×0.8 4.43-4.38SM7/32-32 5.003-4.955W 1/2 - 1210.7010.50M5.0×0.9 4.36-4.31SM15/64-28 5.325-5.570W 9/16 - 1212.3012.00M6.0×1.0 5.30-5.25SM1/4-40 5.890-5.735W 5/8 - 1113.7013.50M7.0×1.0 6.30-6.25SM1/4-28 5.721-5.366W 3/4 - 1016.7016.50M8.0×1.07.28-7.23SM9/32-28 6.508-6.648W 7/8 - 919.5019.30M8.0×1.257.12-7.07SM11/32-288.092-8.432W1 - 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规格滚造径规格(UNEF)钻孔径规格滚造径螺丝攻牙钻孔径和滚造径对照表英制螺纹公制螺纹针车用螺纹。
管螺丝攻牙钻孔经和滚造经对照表
标准经 规格 PT1/16-28 PT1/8-28 PT1/4-19 PT3/8-19 PT1/2-14 PT3/4-14 PT1--11 PT1-1/4-11 PT1-1/2-11 PT2--11
使用绞刀时 不用绞刀时
注：无槽沟死攻之钻孔经，在上表所列之 数值，由于被加工材料材质、硬度、形状 、尺寸等影响，多少会有秘变动，因此于 参考上表同时，亦请增减若干。
2级牙钻孔径 标准经 最大 最小 13.50 13.676 13.376 14.00 14.153 13.917 14.50 14.676 14.376 15.00 15.153 14.917 15.50 15.676 15.376 16.00 16.153 15.917 16.00 16.210 15.835 16.50 16.676 16.376 17.00 17.153 16.917 18.00 18.210 17.835 18.50 18.676 18.376 19.00 19.153 18.917 20.00 20.210 19.835 20.50 20.676 20.376 21.00 21.153 20.917 22.00 22.210 21.835 22.50 22.676 22.376 23.00 23.153 22.917 23.00 23.210 22.835 23.50 23.676 23.376 24.00 24.153 23.917 24.50 24.676 24.376 25.00 25.210 24.835 25.50 25.676 25.376 26.00 26.153 25.917 26.00 26.210 25.835 26.50 26.676 26.376 27.00 27.153 26.917 27.00 27.252 26.752 28.00 28.210 27.835 28.50 28.676 28.376 29.00 29.153 28.917 30.00 30.210 29.835 30.50 30.676 30.376 30.00 30.252 29.752 31.00 31.210 30.835 31.50 31.676 31.376 33.50 33.676 33.376 33.00 33.252 32.752 34.00 34.210 33.835 34.50 34.676 34.376
公制及美制螺纹钻孔及滚丝径查询
－
M1.1×0.25
0.96
0.98
－
NO.3-48
2.23
－
－
M1.2×0.25
1.06
1.08
－
NO.4-40
2.50
－
－
M1.4×0.3
1.24
1.25
－
NO.5-40
2.83
－
－
M1.6×0.35
1.41
1.43
－
NO.6-32
3.07
－
－
M1.7×0.35
1.51
1.53
－
NO.8-32
最大
最小
最大
最小
M1.0×0.2
0.80
0.821
0.783
NO.0-80(1.524)
1.25
1.305
1.182
M1.1×0.2
0.90
0.921
0.883
NO.1-72(1.854)
1.55
1.612
1.474
M1.2×0.2
1.00
1.021
0.983
NO.2-64(2.184)
1.85
1.912
2.551
M1.8×0.2
1.60
1.621
1.583
NO.6-40(3.505)
2.90
3.022
2.820
M2.0×0.25
1.75
1.785
1.729
NO.8-36(4.166)
3.50
3.606
3.404
M2.2×0.25
1.95
1.985
1.929
NO.10-32(4.826)
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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
×
×
×
×
×
×
×
NO8-32
×
×
×
1/4-20
×
5/16-18
×
3/8-16
×
7/16-14
×
1/2-13
×
9/16-12
×
5/8-11
×
3/4-10
×
7/8-9
×
1
×
1-1/8-7
×
G7-G8
G9
×
－
－
－
×
－
－
－
×
－
－
－
×
－
－
－
×
－
－
－
×
－
－
×
－
－
×
－
－
×
－
1/4-20
－
－
×
－
5/16-18
－
－
×
－
3/8-16
－
×
－
7/16-14
－
×
－
1/2-13
－
×
－
－
－
×
－
－
×
－
－
×
－
－
×
－
－
×
－
－
M10×
－
M10×
－
M12×
1/4-28
－
M12×
5/16-24
－
3/8-24
－
－
7/16-20
1-1/4-7
×
1-3/8-6
×
1-1/2-6
×
1-3/4-5
M10×
2-4-1/2
M11×
M12×
M14×
M16×
M18×
M20×
M22×
M24×
M27×
M30×
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
×
×
×
×
×
3/4 - 14
PS 1 - 11
PT 1- 11
1 - 11-1/2
PS 1-1/4 - 11
PT 1-1/4 - 11
1-1/4-11-1/2
PS 1-1/2 - 11
PT 1-1/2 - 11
1-1/2-11-1/2
PS 2 - 11
PT 2 - 11
2 - 11 - 1/2
签名档：
英制螺纹螺母孔径
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
M11×
M11×
M12×
M12×
M12×
×
M14×
M14×
M15×
M15×
M16×
M16×
M17×
M17×
M18×
M18×
M18×
M20×
M20×
M20×
M22×
M22×
M22×
M24×
M24×
M24×
M25×
M25×
×
×
×
×
×
×
1/4-28
×
5/16-24
×
3/8-24
×
7/16-20
×
1/2-20
×
9/16-18
×
5/8-18
×
3/4-16
×
7/8-14
×
1-12
×
1-1/8-12
×
1-1/4-12
×
1-3/8-12
×
1-1/2-12
×
×
×
M10×
M10×
M10×
M10×
螺丝攻牙钻孔径和滚丝径对照表
公制细螺纹
M25×
M26×
M27×
M27×
M27×
M28×
M28×
M28×
M30×
M30×
M30×
M30×
M32×
M32×
M33×
M33×
M33×
M35×
M36×
M36×
M36×
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
美制挤压丝攻钻孔径
规格
精度等级
规格（UNC）
精度等级
G4-G6
G7-G8
G9
G4-G6
SM7/16-28
1 - 1/4 - 7
SM7/16-16
签名档：
英制管螺纹
英制管螺纹
美制管螺纹
规格
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
NPT
NPS
使用绞刀时
不用绞刀时
PS 1/16 - 28
PT 1/16 - 28
3/4
1
11/4
13/8
11/2
28
19
19
14
14
11
11
11
11
－
1/2-20
－
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
2BA
-32
3BA
5/16 -32
4BA
-32
5BA
-28
6BA
-28
9/16 -24
5/8 -24
3/4 -20
7/8 -20
1 -20
签名档：
螺丝攻牙钻孔径和滚丝径对照表
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 - 40
M3×
5/32 - 32
×
3/16 - 24
×
1/4 - 20
×
5/16 - 18
×
3/8 - 16
×
7/16 - 14
×
1/2 - 12
×
9/16 - 12
×
5/8 - 11
×
3/4 - 10
×
7/8 - 9
×
- 8
SM3/8-28
1-1/8 - 7
英制螺纹
圆拄管螺纹
螺纹直径
（英寸）
每英寸牙数
钻头直径（毫米）
螺纹直径（英寸）
每英寸牙数
钻头直径（毫米）
铸铁、黄铜、青铜
钢、可锻铸铁
3/16
1/4
5/16
3/8
1/2
5/8
3/4
7/8
1
11/8
11/4
11/2
13/4
2
24
20
18
16
12
11
10
9
8
7
7
6
5
41/2
8
25
34
1/8
1/4
3/8
1/2
1/16 - 27
PS 1/8 - 28
PT 1/8 - 28
1/8 - 27
PS 1/4 - 19
PT 1/4 - 19
1/4 - 18
PS 3/8 - 19
PT 3/8 - 19
3/8 - 18
PS 1/2 - 14
PT 1/2 - 14
1/2 - 14
PS 3/4 -14
PT 3/4 - 14