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螺纹攻牙钻孔径对照表

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最大最小最大最小最大最小M1.0 0.250.750.7850.729M1.0 0.20.800.8210.783M15 1.014.0014.15313.917M1.1 0.250.850.8850.829M1.1 0.20.900.9210.883M16 1.514.5014.67614.376M1.2 0.250.950.9850.929M1.2 0.21.001.0210.983M16 1.015.0015.15314.917M1.4 0.31.101.1421.075M1.4 0.21.201.2211.183M17 1.515.5015.67615.376M1.6 0.351.251.3211.221M1.6 0.21.401.4211.383M17 1.016.0016.15315.917M1.7 0.351.351.4211.321M1.7 0.21.451.5001.460M18 2.016.0016.21015.835M1.8 0.351.451.5211.421M1.8 0.21.601.6211.583M18 1.516.5016.67616.376M2.0 0.41.601.6791.567M2.0 0.251.751.7851.729M18 1.017.0017.15316.917M2.2 0.451.751.8381.713M2.2 0.251.951.9851.929M20 2.018.0018.21017.835M2.3 0.41.901.9791.867M2.3 0.252.052.0612.001M20 1.518.5018.67618.376M2.5 0.452.102.1382.013M2.5 0.352.202.2212.121M20 1.019.0019.15318.917M2.6 0.452.202.2382.113M2.6 0.352.202.2462.186M22 2.020.0020.21019.835M3.0 0.52.502.5992.459M3.0 0.352.702.7212.621M22 1.520.5020.67620.376M3.5 0.62.903.0102.850M3.5 0.353.203.2213.121M22 1.021.0021.15320.917M4.0 0.73.303.4223.242M4.0 0.53.503.5993.459M24 2.022.0022.21021.835M4.5 0.753.803.8783.688M4.5 0.54.004.0993.959M24 1.522.5022.67622.376M5.0 0.84.204.3344.134M5.0 0.54.504.5994.459M24 1.023.0023.15322.917M6.0 1.05.005.1534.917M5.5 0.55.005.0994.959M25 2.023.0023.21022.835M7.0 1.06.006.1535.917M6.0 0.755.305.3785.188M25 1.523.5023.67623.376M8.0 1.256.806.9126.647M6.0 0.55.505.5505.400M25 1.024.0024.15323.917M9.0 1.257.807.9127.647M7.0 0.756.306.3786.188M26 1.524.5024.67624.376M10 1.58.508.6768.376M7.0 0.56.506.5506.400M27 2.025.0025.21024.835M11 1.59.509.6769.376M8.0 1.07.007.1536.917M27 1.525.5025.67625.376M12 1.7510.3010.44110.106M8.0 0.757.307.3787.188M27 1.026.0026.15325.917M14 2.012.0012.21011.835M8.0 0.57.507.5207.400M28 2.026.0026.21025.835M16 2.014.0014.21013.835M9.0 1.08.008.1537.917M28 1.526.5026.67626.376M18 2.515.5015.74415.294M9.0 0.758.308.3788.188M28 1.027.0027.15326.917M20 2.517.5017.74417.294M10 1.258.808.9218.647M30 3.027.0027.25226.752M22 2.519.5019.74419.294M10 1.09.009.1538.917M30 2.028.0028.21027.835M24 3.021.0021.25220.752M10 0.759.309.3789.188M30 1.528.5028.67628.376M27 3.024.0024.25223.752M10 0.59.509.5209.400M30 1.029.0029.15328.917M30 3.526.5026.77126.211M11 1.010.0010.1539.917M32 2.030.0030.21029.835M33 3.529.5029.77129.211M11 0.7510.3010.37810.188M32 1.530.5030.67630.376M36 4.032.0032.27031.670M12 1.510.5010.67610.376M33 3.030.0030.25229.752M39 4.035.0035.27034.670M12 1.2510.8010.91210.647M33 2.031.0031.21030.835M12 1.011.0011.15310.917M33 1.531.5031.67631.376M12 0.515.0011.52011.400M35 1.533.5033.67633.376M14 1.512.5012.67612.376M36 3.033.0033.25232.752M14 1.013.0013.15312.917M36 2.034.0034.21033.835M15 1.513.5013.67613.376M36 1.534.5034.67634.376螺 纹 攻 牙 钻 孔 径 对 照 表

公 制 细 螺 纹规格标准径2级牙钻孔径公 制 粗 螺 纹规格标准径2级牙钻孔径公 制 细 螺 纹规格标准径2级牙钻孔径

1规格规格（UNF）最大最小（UNC）最大最小（螺丝牙外径）5/16" -18G77.387.23（螺丝牙外径）No.0 -80(1.542)1.251.3051.1823/8" -16G78.898.72No.1 -64(1.854)1.551.5821.425No.1 -72(1.854)1.551.6121.4747/16"-14G810.4010.02No.2 -56(2.184)1.801.8711.695No.2 -64(2.184)1.851.9121.7561/2" -13G811.9211.70No.3 -48(2.515)2.102.1461.941No.3 -56(2.515)2.102.1972.0250 -80UNFG51.451.39No.4 -40(2.845)2.302.3852.157No.4 -48(2.845)2.402.4582.2711 -72G51.771.70No.5 -40(3.175)2.602.6972.487No.5 -44(3.175)2.702.7402.5512 -64G42.061.98No.6 -32(3.505)2.802.8952.642No.6 -40(3.505)2.903.0222.823 -56G42.372.29No.8 -32(4.166)3.403.5303.302No.8 -36(4.166)3.503.6063.4044 -48G52.682.59No.10-24(4.826)3.903.9623.683No.10-32(4.826)4.104.1653.9635 -44G52.992.90No.12-24(5.486)4.504.5974.344No.12-28(5.486)4.604.7244.4966 -40G53.293.191/4 -205.105.2574.9791/4 -285.505.5885.3608 -36G53.913.815/16 -186.606.7316.4015/16 -246.907.0356.78210 -32G64.534.443/8 -168.008.1537.7983/8 -248.508.6368.38212 -28G65.135.037/16 -149.409.5509.1447/16 -209.9010.0339.7291/4" -28G76.005.911/2 -1310.9011.02310.5921/2 -2011.5011.60711.3295/16" -24G77.537.429/16 -1212.2012.44611.9899/16 -1812.9013.08112.7513/8" -24G79.108.995/8 -1113.6013.86813.3865/8 -1814.5014.68114.3517/16" -20G810.6210.483/4 -1016.6016.84016.3073/4 -1617.5017.67817.3231/2" -20G812.2012.067/8 -919.6019.76119.1777/8 -1420.5020.67520.2701 -822.3022.60621.9711 -1223.3023.57123.1141-1/8 -725.0025.34924.6381-1/8 -1226.5026.74626.2891-1/4 -728.2028.52427.8131-1/4 -1229.6029.92129.464规格1-3/8 -630.8031.11530.3531-3/8 -1232.8033.09632.639（UNEF）最大最小1-1/2 -634.0034.29033.5281-1/2 -1236.0036.27135.814No.12 -324.704.8264.6231-3/4 -539.5039.82738.9641/4 -325.605.6895.4872 -4-1/245.2045.59344.6795/16 -327.107.2647.0873/8 -328.708.8648.6627/16 -2810.2010.33710.1351/2 -2811.8011.93811.710 1 -64UNCG51.761.689/16 -2413.2013.38513.132 2 -56G42.041.965/8 -2414.8014.96814.732M1.0 0.25G40.920.89 3 -48G42.352.253/4 -2017.8017.95717.679M1.2 0.25G41.111.09 4 -40G52.642.547/8 -2021.0021.13220.854M1.4 0.30G41.301.26 5 -40G52.972.871 -2024.1024.30724.029M1.6 0.35G41.471.43 6 -32G53.223.11M1.7 0.35G41.571.52 8 -32G63.893.78M1.8 0.35G41.671.62 10 -24G64.444.30M2.0 0.40G41.841.79 12 -24G65.074.96M2.2 0.45G52.041.98 1/4" -20G75.865.73M2.3 0.40G42.142.09M2.5 0.45G52.342.27公制迫牙丝攻钻孔径

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螺丝攻牙钻孔径和滚造径对照表

螺丝攻牙钻孔径和滚造径对照表

最大最小

最大最小G4-G6G7-G8G9M1.0×0.250.750.7850.729M12×1.011.0011.15310.917M1.0×0.250.860.88—M1.1×0.250.850.8850.829M12×0.511.5011.52011.400M1.1×0.250.960.98—M1.2×0.250.950.9850.929M14×1.512.5012.67612.376M1.2×0.251.061.08—M1.4×0.31.101.1421.075M14×1.013.0013.15312.917M1.4×0.31.241.25—M1.6×0.351.251.3211.221M15×1.513.5013.67613.376M1.6×0.351.411.43—M1.7×0.351.351.4211.321M15×1.014.0014.15313.917M1.7×0.351.511.53—M1.8×0.351.451.5211.421M16×1.514.5014.67614.376M1.8×0.351.611.63—M2.0×0.41.601.6791.567M16×1.015.0015.15314.917M2.0×0.41.781.80—M2.2×0.451.751.8381.713M17×1.515.5015.67615.376M2.2×0.451.951.98—M2.3×0.401.901.9791.867M17×1.016.0016.15315.917M2.3×0.402.082.10—M2.5×0.452.102.1382.013M18×2.016.0016.21015.835M2.5×0.452.252.28—M2.6×0.452.202.2382.113M18×1.516.5016.67616.376M2.6×0.452.352.38—M3.0×0.52.502.5992.459M18×1.017.0017.15316.917M3.0×0.52.732.75—M3.0×0.62.402.442.28M20×2.018.0018.21017.835M3.5×0.63.173.20—M3.5×0.62.903.012.85M20×1.518.5018.67618.376M4.0×0.73.623.653.69M4.0×0.73.303.4223.242M20×1.019.0019.15318.917M5.0×0.84.564.604.64M4.0×0.753.253.3263.106M22×2.020.0020.21019.835M6.0×1.05.455.505.55M4.5×0.753.803.8783.688M22×1.520.5020.67620.376M7.0×1.06.456.506.55M5.0×0.84.204.3344.134M22×1.021.0021.15320.917M8.0×1.257.317.387.44M5.0×0.94.104.173.93M24×2.022.0022.21021.835M10×1.59.189.259.32M6.0×1.05.005.1534.917M24×1.522.5022.67622.376M10×1.259.319.389.44M7.0×1.06.006.1535.917M24×1.023.0023.15322.917M12×1.7511.0411.1211.21M8.0×1.256.806.9126.647M25×2.023.0023.21022.835M12×1.2511.3111.3811.44M9.0×1.257.807.9127.647M25×1.523.5023.67623.376M10×1.58.508.6768.376M25×1.024.0024.15323.917M11×1.59.509.6769.376M26×1.524.5024.67624.376M12×1.7510.3010.44110.106M27×2.025.0025.21024.835M14×2.012.0012.2111.835M27×1.525.5025.67625.376M16×2.014.0014.2113.835M27×1.026.0026.15325.917M18×2.515.5015.74415.294M28×2.026.0026.21025.835M20×2.517.5017.74417.294M28×1.526.5026.67626.376M22×2.519.5019.74419.294M28×1.027.0027.15326.917M24×3.021.0021.25220.752M30×3.027.0027.25226.752最大最小M27×3.024.0024.25223.752M30×2.028.0028.21027.835No.1-64(1.854)1.551.5821.425M30×3.526.5026.77126.211M30×1.528.5028.67628.376No.2-56(2.184)1.801.8711.695M30×1.029.0029.15328.917No.3-48(2.515)2.102.1461.941M32×2.030.0030.21029.835No.4-40(2.845)2.302.3852.157M32×1.530.5030.67630.376No.5-40(3.175)2.602.6972.487M33×3.030.0030.25229.752No.6-32(3.505)2.802.8952.642最大最小M33×2.031.0031.21030.835No.8-32(4.166)3.403.5303.302M1.0×0.20.800.8210.783M33×1.531.5031.67631.736No.10-24(4.826)3.903.9623.683标准径规格2级牙钻孔径规格标准径精度等级2级牙钻孔径规格

螺纹钻底孔用钻头直径表

螺纹钻底孔用钻头直径表

公制螺纹钻底孔用钻头直径表

公称直径d 螺距t 钻头直径dz

粗 细 粗 细

1 0.25 0.2 0.75 0.8

2 0.4 0.25 1.6 1.75

3 0.5 0.35 2.5 2.65

4 0.7 0.5 3.3 3.5

5 0.8 0.5 4.2 4.5

6 1 0.75 5 5.2

8 1.25 1.。。。。。0.75 6.7 7．。。。7.2

10 1.5

1.25.。1.。0.75 8.5 8.7.。9.。9.2

12 1.75 1.5.。1.25.。1 10.2 10.5.。10.7.。11

14 2 1.5.。1.25，，1 11.9 12.5，12.7，13

16 2 1.5，1 13.9 14.5，15

18 2.5 2，1.5，1 15.4 15.9，16.5，17

20 2.5 2，1.5，1 17.4 17.9，18.5，19

22 2.5 2，1.5，1 19.4 19.9，20.5，21

24 3 2，1.5，1 20.9 21.9，22.5，23

27 3 2，1.5，1 23.9 24.9，25.5，26

30 3.5 3，2，1.5，1 26.3 26.9，27.9，28.5，29

33 3.5 3，2，1.5 29.3 29.9，30.9，31.5

36 4 3，2，1.5 31.8 32.9，33.9，34.5

39 4 3，2，1.5 34.8 35.9，36.9，37.5

42 4.5 4，3，2，1.5 37.3 37.8，38.9，39.9，40.5

*为目前尚未列入麻花钻标准系列的规格。建议根据加工条件，按下列表选择待用钻头

公称直径d 推荐钻头直径dz 代用直径d’

1 2

16 13.9 13.8 14

22 19.4 19.3 19.5

27 23.9 24

30 26.3 26.4

33 29.3 29.2

36 31.8 32

螺丝攻牙钻孔径对照表2

螺丝攻牙钻孔径对照表2

最大最小最大最小

M1.0*0.250.750.7850.729M5.0*0.84.24.3344.134(螺丝牙外径）

M1.1*0.250.850.8850.829M6.0*1.055.1534.917No.0-80(1.524)

M1.2*0.250.950.9850.929M7.0*1.066.1535.917No.1-72(1.854)

M1.4*0.31.11.1421.075M8.0*1.256.86.9126.647No.2-64(2.184)

M1.6*0.351.251.3211.221M9.0*1.257.87.9127.647No.3-56(2.515)

M1.7*0.351.351.4211.321M10*1.58.58.6768.376No.4-48(2.845)

M1.8*0.351.451.5211.421M11*1.59.59.6769.376No.5-44(3.175)

M2.0*0.41.61.6791.567M12*1.7510.310.44110.106No.6-40(3.505)

M2.2*0.451.751.8381.713M14*2.01212.2111.835No.8-36(4.166)

M2.3*0.41.91.9791.867M16*2.01414.2113.835No.10-32(4.826)

M2.5*0.452.12.1382.013M18*2.515.515.74415.294No.12-28(5.846)M2.6*0.452.22.2382.113M20*2.517.517.74415.2942001-4-28

M3.0*0.52.52.5992.459M22*2.519.519.74419.2945/16 -24

M3.5*0.62.93.012.85M24*3.02121.25220.752

M4.0*0.73.33.4223.242M27*3.02424.25223.752

各种螺纹详细参数和钻孔直径对照表

各种螺纹详细参数和钻孔直径对照表

螺纹下孔径表

公制粗牙螺纹

JIS B 0209-1982(單位：mm)

螺纹尺寸 钻头直径 崁合度區分：中(注1)2級(注2)

下孔径 崁合度區分：中(註1)2級(註2)

內螺纹小径

最小直径 最大直径

M 1 ×

0.25 0.75 0.78 (80%) 0.729 0.785

1.1 ×

0.25 0.85 0.88 (80%) 0.829 0.885

1.2 ×

0.25 0.95 0.98 (80%) 0.929 0.985

1.4 × 0.3 1.1 1.14 (80%) 1.075 1.142

1.6 ×

0.35 1.25 1.32 (75%) 1.221 1.321

1.8 ×

0.35 1.45 1.52 (75%) 1.421 1.521

2 × 0.4 1.6 1.65 (80%) 1.567 1.679

2.2 ×

0.45 1.75 1.83 (75%) 1.713 1.838

2.5 ×

0.45 2.1 2.13 (75%) 2.013 2.138

3 × 0.5 2.5 2.59 (75%) 2.459 2.599 3.5 × 0.6 2.9 3.01 (75%) 2.850 3.010

4 × 0.7 3.3 3.39 (80%) 3.242 3.422

4.5 ×

0.75 3.8 3.85 (80%) 3.688 3.878

5 × 0.8 4.2 4.31 (80%) 4.134 4.334

6 × 1 5 5.13 (80%) 4.917 5.153

7 × 1 6 6.13 (80%) 5.917 6.153

8 × 1.25 6.8 6.85 (85%) 6.647 6.912

9 × 1.25 7.8 7.85 (85%) 7.647 7.912

10 × 1.5 8.5 8.62 (85%) 8.376 8.676