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[m3螺纹底孔多大]m3螺纹底孔多大钻头? m3螺纹底孔多大

本表所推选钻头孔径,是针对攻牙加工时,能够很容易的了解钻头直径;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,精度有很大影响,所以使用本表之钻孔径,若有不当之处,应实际状况适当的变更钻头直径,本表依据2级牙制订.

公 制 精 螺 纹


规格标准径2级牙钻孔径
最大最小

M1.0×0.250.750.7850.729
M1.1×0.250.850.8850.829
M1.2×0.250.950.9850.929
M1.4×0.31.101.1421.075
M1.6×0.351.251.3211.221
M1.7×0.351.351.4211.321
M1.8×0.351.451.5211.421
M2.0×0.41.601.6791.567
M2.2×0.451.751.8381.713
M2.3×0.41.901.9791.867
M2.5×0.452.102.1382.013
M2.6×0.452.202.2382.113
M3.0×0.52.502.5992.459
M3.0×0.62.402.442.280
M3.5×0.62.903.0102.850
M4.0×0.73.303.4223.242
M4.0×0.753.253.3263.106
M4.5×0.753.803.8783.688
M5.0×0.84.204.3344.134
M5.0×0.94.104.1703.930
M6.0×1.05.005.1534.917
M7.0×1.06.006.1535.917
M8.0×1.256.806.9126.647
M9.0×1.257.807.9127.647
M10×1.58.508.6768.376
M11×1.59.509.6769.376
M12×1.7510.3010.44110.106
M14×2.012.0012.21011.735
M16×2.014.0014.21013.835
M18×2.515.5015.74415.294
M20×2.517.5017.74417.294
M22×2.519.5019.74419.294
M24×3.021.0021.2522.752
M27×3.024.0024.25223.752
M30×3.526.5026.77126.211
公 制 细 螺 纹


规格标准径2级牙钻孔径
最大最小

M1.0×0.20.800.8210.783
M1.1×0.20.900.9210.883
M1.2×0.21.001.0210.983
M1.4×0.21.201.2210.183
M1.6×0.21.401.4211.383
M1.7×0.21.451.5001.460
M1.8×0.21.601.6211.583
M2.0×0.251.751.7851.729
M2.2×0.251.951.9851.929
M2.3×0.252.052.0612.001
M2.5×0.352.202.2212.121
M2.6×0.352.202.2462.186
M3.0×0.352.702.7212.621
M3.5×0.353.203.2213.121
M4.0×0.53.503.5993.459
M4.5×0.54.004.0993.959
M5×0.54.504.5994.459
M5.5×0.55.005.0994.959
M6.0×0.755.305.3785.188
M6.0×0.55.505.5505.400
M7.0×0.756.306.37861.88
M7.0×0.56.506.55064.00
M8.0×1.07.007.1536.917
M8.0×0.757.307.3787.188
M8×0.57.507.5207.400
M9×1.08.008.1537.917
M9×0.758.308.3788.188
M10×1.258.808.9128.647
M10×1.09.009.1538.917
M10×0.759.309.3789.188
M10×0.59.509.5209.400
M11×1.010.0010.1539.917
M11×0.7510.3010.37810.188
M11×1.510.5010.67610.376
M12×1.2510.8010.91210.647
公 制 细 螺 纹


规格标准径2级牙钻孔径
最大最小

M12×1.011.0011.15310.917
M12×0.511.5011.52011.4
M14×1.512.5012.67612.376
M14×1.013.0013.15312.917
M15×1.513.5013.67613.376
M15×1.014.0014.15313.917
M16×1.514.5014.67614.376
M16×1.015.0015.15314.917
M17×1.515.5015.67615.376
M17×1.016.0016.15315.917
M18×2.016.0016.21015.835
M18×1.516.5016.67016.376
M18×1.017.0017.15316.917
M20×2.018.0018.21017.835
M20×1.518.5018.67618.376
M20×1.019.0019.15318.917
M20×2.020.0020.21019.835
M22×1.520.5020.67620.376
M22×1.021.0021.15320.917
M24×2.022.0022.21021.835
M24×1.522.5022.67622.376
M24×1.023.0023.15322.917
M25×2.023.0023.21022.835
M25×1.523.5023.67623.376
M25×1.024.0024.15323.917
M26×1.524.5024.67624.376
M27×2.025.0025.21024.835
M27×1.525.5025.67625.376
M27×1.026.0026.15325.917
M28×2.026.0026.21025.835
M28×1.526.5026.67626.376
M28×1.027.0027.15326.917
M30×3.027.0027.25226.752
M30×2.028.0028.21027.835
M30×1.528.5028.67628.376
M30×1.029.0029.15328.917
M32×2.030.0030.21029.835
M32×1.530.5030.67630.376
M33×3.030.0030.25229.752
M33×2.031.0031.21030.835
M33×1.531.5031.37631.376
M35×1.533.5033.67633.376
M36×3.033.0033.25232.752
M36×2.034.0034.21033.835
M36×1.534.5034.67634.376
美 制 细 螺 纹


规格(UNF)标准径2级牙钻孔径
最大最小

番数牙外径
NO.0-80)1.251.3051.182
NO.1-72)1.551.6121.474
NO.2-64)1.851.9121.756
NO.3-56)2.102.1972.025
NO.4-48)2.402.4582.271
NO.5-44)2.702.7402.551
NO.6-40)2.903.0222.820
NO.8-36)3.503.6063.404
NO.10-32)4.104.1653.963
NO.12-28)4.604.7244.496
1/4 -285.505.5885.360
5/16 -246.907.0356.782
3/8 -248.508.6368.382
7/16 -209.9010.0339.729
1/2 -2011.5011.60711.329
9/16 -1812.9013.08112.751
5/8 -1814.5014.68114.351
3/4 -1617.5014.67817.323
7/8 -1420.5020.67520.270
1 -1223.2023.57123.114
1-1/8 -1226.5026.74626.289
1-1/4 -1229.5029.92129.464
1-3/8 -1232.8033.09632.464
1-1/2 -1236.0036.27035.814
无 屑 丝 攻 钻 孔 径


规格精度等级

RH4.5.6RH7.8RH9
M1.0×0.250.860.88-
M1.1×0.250.960.98-
M1.2×0.251.061.08-
M1.4×0.31.241.25-
M1.6×0.351.411.43-
M1.7×0.351.511.53-
M1.8×0.351.611.63-
M2.0×0.41.781.80-
M2.2×0.451.951.98-
M2.3×0.42.082.10-
M2.5×0.452.252.28-
M2.6×0.452.351.38-
M3.0×0.52.732.75-
M3.0×0.63.173.20-
M4.0×0.73.623.653.69
M5.0×0.84.564.604.64
M6.0×1.05.455.505.55
M7.0×1.06.456.506.55
M8.0×1.257.317.387.44
M10×1.59.189.259.32
M10×1.259.319.389.44
M12×1.7511.0411.1211.21
M12×1.2511.3111.3811.44
注:无槽丝攻之钻孔径,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,因此参考上表之同时,亦请增减若干.


















美 制 管 螺 纹


规格(UNEF)标准径2级牙钻孔径
最大最小

NO.12 -324.704.8264.623
1/4 -325.605.6905.486
5/16 -327.107.2647.087
3/8 -328.708.8658.661
7/16 -2810.2010.33810.135
1/2 -2811.8011.93811.709
9/16 -2813.2013.38613.132
5/8 -2414.8014.98614.732
3/4 -2017.8017.95817.678
7/8 -2021.0021.13320.853
1 -2024.0024.30824.028







美 制 粗 螺 纹


规格(UNC)标准径2级牙钻孔径
番数牙外径最大最小
NO.1-64)1.551.5821.425
NO.2-56)1.801.8711.695
NO.3-48)2.102.1461.941
NO.4-40)2.302.3852.157
NO.5-40)2.602.6972.487
NO.6-32)2.802.8952.642
NO.8-32)3.403.5303.302
NO.10-24)3.903.9623.682
NO.12-24)4.504.5974.344
1/4 -205.105.2574.979
5/16 -186.606.7316.401
3/8 -168.008.1537.987
7/16 -149.409.5009.144
1/2 -1310.8011.02310.592
9/16 -1212.2012.44611.989
5/8 -1113.6012.86813.386
3/4 -1016.2016.84016.307
7/8 -919.5019.76119.177
1 -822.2022.60621.971
1-1/8 -725.0025.34924.638
1-1/4 -728.2028.52427.813
1-3/8 -630.8031.11530.353
1-1/2 -634.0034.29033.528
1-3/4 -539.5039.82738.964
2 -4-1/245.2045.59344.679
英 制 螺 纹



规格钻孔径


硬材软材


W1/8 - 402.652.60

W5/32 - 323.253.20

W3/16 - 243.753.70

W1/4 - 205.105.00

W5/16 - 186.606.50

W3/8 - 168.007.90

W7/16 - 149.409.30

W1/2 - 1210.7010.50

W9/16 - 1212.3012.00

W5/8 - 1113.7013.50

W3/4 - 1016.7016.50

W7/8 - 919.5019.30

W1 - 822.4022.00

W1-1/8 - 725.0024.80

W1-1/4 - 728.3028.00










英 制 管 螺 纹


















规格标准径钻 孔 径

最大最小


PS1/16 -286.506.6326.490
PS1/8 -288.508.6378.495
PS1/4 - 1911.4011.54911.341
PS3/8 - 1915.0015.05414.846
PS1/2 - 1418.5018.77318.489
PS3/4 - 1424.0024.25923.975
PS1 - 1130.2030.47130.111
PS1-1/4 -1138.8039.13238.772
PS1-1/2 -1144.8045.02544.665
PS2 - 1156.5056.83656.476




英 制 管 螺 纹













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
使用绞刀时不用绞刀时


PT1/16 -286.106.26.2446.384
PT1/8 -288.108.28.2498.388
PT1/4 -1910.701110.96211.174
PT3/8 -1914.2014.514.44814.658
PT1/2 -1417.601817.97918.263
PT3/4 -1423.0023.523.37823.663
Pt1 -1129.0029.529.45929.822
PT1-1/4 -1137.503837.97638.339
PT1-1/2 -1143.404443.86944.232
Pt2 -1154.9055.555.41255.844




美 制 螺 纹 滚 造 径













规格钻孔径


NPTNPS


使用绞刀时不用绞刀时


1/16 -276.16.256.35
1/8 -278.338.438.74
1/4 -1810.7211.1311.13
3/8 -1814.2714.2714.68
1/2 -1417.4817.8618.26
3/4 -1422.6323.0123.42
1 -11-1/228.5828.9829.36
1-1/4-11-1/237.3137.6938.1
1-1/2-11-1/243.6644.0444.45
2 -11-1/255.5855.9656.36




英 制 螺 纹 滚 造 径


















规格滚造径


W 3/16 - 244.08 - 4.05


W 1/4 - 205.51 - 5.46


W 5/16 - 187.01 - 6.95


W 3/8 - 168.48 - 8.41


W 7/16 - 149.92 - 9.85


W 1/2 - 1211.31 - 11.24


W 9/16 -1212.89 - 12.82


公 制 螺 纹


规格滚造径


M3.0×0.52.63 2.60
M3.0×0.62.56 2.53
M3.5×0.63.06 3.03
M4.0×0.73.49 3.45
M4.0×0.753.45 3.41
M4.5×0.753.96 3.92
M5.0×0.84.43 4.38
M5.0×0.94.36 4.31
M6.0×1.05.30 5.25
M7.0×1.06.30 6.25
M8.0×1.07.28 - 7.23
M8.0×1.257.12 - 7.07
M9.0×1.258.12 - 8.07
M10×1.259.10 - 9.04
M10×1.58.97 - 8.91
M11×1.59.97 - 9.91
M12×1.510.92 - 10.87
M12×1.7510.79 - 10.73
M14×2.012.63 - 12.56
M16×2.014.63 - 14.56
M18×2.516.31 - 16.23
M20×2.518.31 - 18.23
M22×2.520.31 - 20.23

针 车 用 螺 纹




规格(UNC)滚造径
SM 1/8 402.735 -2.688
SM 1/8 442.769 -2.722
SM 9/64 403.128 -3.083
SM 11/64 403.855 -3.805
SM 3/16 324.205 -4.155
SM 3/16 284.143 -4.093
SM 7/32 325.003 -4.955
SM 15/64 285.325 -4.955
SM 1/4 405.890 -5.735
SM 1/4 285.721 -5.366
SM 9/32 286.528 -6.648
SM 11/32 288.092 -8.432
SM 3/8 298.880 -8.015
SM 7/16 3010.466 -10.401
SM 7/16 1610.037 -9.967
SM 1/2 2011.819 -11.749
SM 9/16 2013.400 -13.425

美 制 粗 螺 纹




规格(UNC)滚造径
NO.5-402.70 - 2.67
NO.6-322.95 - 2.91
NO.8-323.60 - 3.57
NO.10-244.09 - 4.05
NO.12-244.75 - 4.70
1/4 -205.50 - 5.45
5/16 -186.98 - 6.93
3/8 -168.45 - 8.40
7/16 -149.89 - 9.83
1/2 -1311.39 - 11.32
9/16 -1212.87 - 12.80

美 制 细 螺 纹




规格(UNF)滚造径
NO.5-442.73 - 2.70
NO.6-403.05 - 3.02
NO.8-363.66 - 3.63
NO.10-324.26 - 4.80
NO.12-284.84 - 4.80
1/4 -285.72 - 5.68
5/16 -247.20 - 7.16
3/8 -248.79 - 8.74
7/16 -2010.23 - 10.18
1/2 -2011.82 - 11.76

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