******本表依据二级牙制订规格最大最小最大最小G1-G6G7-G8G9G1-G6G7-G8G9硬材M1.0*0.250.750.7850.729M12*1.011.0011.15310.917M1.0*0.250.860.88..1.94....W1/8 - 402.65M1.1*0.250.850.8850.829M12*0.511.5011.52011.400M1.1*0.250.960.98..2.23....W5/32 - 323.25M1.2*0.250.950.9850.929M14*1.512.5012.67612.376M1.2*0.251.061.08..2.50....W3/16 - 243.75M1.4*0.31.101.1421.075M14*1.013.0013.15312.917M1.4*0.31.241.25..2.83....W1/4 - 205.10M1.6*0.351.251.3211.221M15*1.513.5013.67613.376M1.6*0.351.411.43..3.07....W5/16 - 186.60M1.7*0.351.351.4211.321M15*1.014.0014.15313.917M1.7*0.351.511.53..3.733.77..W3/8 - 168.00M1.8*0.351.451.5211.421M16*1.514.5014.67614.376M1.8*0.351.611.63..4.244.30..W7/16 - 149.40M2.0*0.41.601.6791.567M16*1.015.0015.15314.917M2.0*0.41.781.80..4.904.96..W1/2 - 1210.70M2.2*0.451.751.8381.713M17*1.515.5015.67615.376M2.2*0.451.951.98....5.72..W9/16 - 1212.30M2.3*0.41.901.9791.867M17*1.016.0016.15315.917M2.3*0.42.082.10....7.24..W5/8 - 1113.70M2.5*0.452.102.1382.013M18*2.016.0016.21015.835M2.5*0.452.252.28....8.748.81W3/4 - 1016.70M2.6*0.452.202.2382.113M18*1.516.5016.67516.376M2.6*0.452.352.38....10.2010.30W7/8 - 919.50M3.0*0.52.502.5992.459M18*1.017.0017.15316.917M3.0*0.52.732.75....11.2711.82W1 - 822.40M3.0*0.62.402.4402.280M20*2.018.0018.21017.835M3.5*0.63.173.20..1.97....W1-1/8 -725.00M3.5*0.62.903.0102.850M20*1.518.5018.67618.376M4.0*0.73.623.653.692.27....W1-1/4 -728.30M4.0*0.73.303.4223.242M20*1.019.0019.15318.917M5.0*0.84.564.604.642.56....M4.0*0.753.253.3263.106M22*2.020.0020.21019.835M6.0*1.05.455.505.552.86....M4.5*0.753.803.8783.688M22*1.520.5020.67620.376M7.0*1.06.456.506.553.16....M5.0*0.84.204.3344.134M22*1.021.0021.15320.917M8.0*1.257.317.387.443.78....M5.0*0.94.104.1703.930M24*2.022.0022.21021.835M10*1.59.189.259.324.394.43..M6.0*1.05.005.1534.917M24*1.522.5022.67623.376M10*1.259.319.389.444.995.04..M7.0*1.06.006.1535.917M24*1.023.0023.15322.917M12*1.7511.0411.1211.215.855.90..规格M8.0*1.256.806.9126.647M25*2.023.0023.21022.835M12*1.2511.3111.3811.447.367.41..SM1/8 - 40M9.0*1.257.807.9127.647M25*1.523.5022.67623.376..9.00..SM1/8 - 44M10*1.58.508.6768.375M25*1.024.0024.15323.917..10.4810.54SM9/64 - 40M11*1.59.509.6769.376M26*1.524.5024.67624.376..12.0712.13SM11/64 - 40M12*1.7510.3010.44110.106M27*2.025.0025.21024.835SM3/16 - 32M14*2.012.0012.21011.835M27*1.525.5025.67625.376SM3/16 - 28M16*2.014.0014.21013.835M27*1.026.0026.15325.917SM7/22 - ?M18*2.515.5015.74415.294M28*2.026.0026.21025.835最大最小SM15/64 - 28M20*2.517.5017.74417.294M28*1.526.5026.67626.376NO. 1 - 64(1.854)1.551.5821.452最大最小SM1/4 - 40M22*2.519.5019.74419.294M28*1.027.0027.15326.917NO. 2 - 56(2.184)1.801.8711.6956.506.6326.490SM1/4 - 28M24*3.021.0021.25220.752M30*3.027.0027.25226.752NO. 3 - 48(2.515)2.102.1461.9418.508.6378.495SM9/32 - 28M27*3.024.0024.25223.752M30*2.028.0028.21027.835NO .4 - 40(2.845)2.302.3852.15711.4011.54911.341SM11/32 - 28 M30*3.526.5026.77126.211M30*1.528.5028.67628.376NO .5 - 40(3.175)2.602.6972.48715.0015.05414.846SM3/8 - 28M30*1.029.0029.15328.917NO .6 - 32(3.505)2.802.8952.64218.5018.77318.489SM7/16 - 28M32*2.030.0030.21029.835NO. 8 - 32(4.166)3.403.5303.30224.0024.25923.975SM7/16 - 16最大最小M32*1.530.5030.67630.376NO.10 - 24(4.826)3.903.9623.68330.2030.47130.111SM1/2 - 20M1.0*0.20.800.8210.783M33*3.030.0030.25229.752NO.12 - 24(5.486)4.504.5974.34438.8039.13238.772SM9/16 - 20M1.1*0.20.900.9210.883M33*2.031.0031.21030.8351/4 - 205.105.2574.97944.8045.02544.665M1.2*0.21.001.0210.983M33*1.531.5031.67631.3765/16 - 186.606.7316.40156.5056.83656.476M1.4*0.21.201.2211.183M35*1.533.5033.67633.3763/8 - 168.008.1537.798M1.6*0.21.401.4211.383M36*3.033.0033.25232.7527/16 - 149.409.5509.144M1.7*0.21.451.5001.460M36*2.034.0034.21033.8351/2 - 1310.8011.02310.592M1.8*0.21.601.6211.583M36*1.534.5034.67634.3769/16 - 1212.2012.44611.989规格M2.0*0.251.751.7851.7295/8 - 1113.6012.86811.386最大最小M2.2*0.251.951.9851.9293/4 - 1016.5018.84016.307PT1/16 - 286.106.206.2446.384规格M2.3*0.252.052.0612.0017/8 - 919.5019.76119.177PT1/8 - 288.108.208.2498.388M3 * 0.5M2.5*0.352.202.2212.121最大最小1 -822.2022.60621.971PT1/4 - 1910.7011.0010.96211.174M3.0 * 0.6M2.6*0.352.202.2462.186NO.0-80(1.524)1.251.3051.1821 -1/8 - 725.0025.34924.638PT3/8 - 1914.2014.5014.44814.658M3.5 * 0.6M3.0*0.352.702.7212.621NO.1-72(1.854)1.551.6121.4741 -1/4 - 28.2028.52427.813PT1/2 - 1417.6018.0017.97918.263M4.0 * 0.7M3.5*0.353.203.2213.121NO.2-64(2.184)1.851.9121.7561 -3/8 - 30.8031.11530.353PT3/4 - 1423.0023.5023.37823.663M4.0 * 0.75M4.0*0.53.503.5993.459NO.3-56(2.515)2.102.1972.0251 -1/2 - 634.0034.29033.528PT1 - 1129.0029.5029.45929.822M4.5 * 0.75M4.5*0.54.004.0993.959NO.4-48(2.845)2.402.4582.2711 -3/4 - 539.5039.82738.964PT1-1/4 - 1137.5038.0037.97638.339M5.0 * 0.8M5.0*0.54.504.5994.459NO.5-44(3.175)2.702.7402.5512-4-1/245.2045.59344.679PT1-1/2 -1143.4044.0043.86944.232M5.0 * 0.9M5.5*0.55.005.0994.959NO.6-40(3.505)2.903.0222.820PT2 - 1154.9055.50055.41255.844M6.0 * 1.0M6.0*0.755.305.3785.188NO.8-36(4.166)3.503.6063.404M7.0 * 1.0M6.0*0.55.505.5505.400NO.10-32(4.826)4.104.1653.963M8.0 * 1.0M7.0*0.756.306.3786.188NO.12-28(5.846)4.604.7244.496M8.0 * 1.25M7.0*0.56.506.5506.4001/4 - 285.505.5882.360M8.0*1.07.007.1536.9175/16 - 245.907.0355.782标准径M8.0*0.757.307.3787.4883/8 - 248.508.6368.382最大最小M8.0*0.57.507.5207.4007/16 - 209.9010.0339.729NO. 12 -324.704.8254.623??M9.0*1.08.008.1537.9171/2 - 2011.5011.60711.3291/4 - 325.605.6905.4866.106.256.35M9.0*0.758.308.3788.1883/16 - 1812.9013.08112.7515/16 - 327.107.2647.0878.338.438.74M10*1.258.808.9128.6475/8 - 1814.5014.68114.3513/8 - 328.708.8658.66110.7211.1311.13M10*1.09.009.1538.9173/4 - 1617.5017.67817.3237/16 - 2810.2010.33810.13514.2714.2714.68M10*0.759.309.3789.1887/8 - 1420.5020.67520.2701/2 - 2811.8011.93811.70917.4817.8618.25规格M10*0.59.508.5209.4001 -1223.2023.57123.1149/16 - 2413.2013.38613.13222.6323.0123.4228AM11*1.010.0010.1539.9171-1/8 - 1226.5026.74626.2895/8 - 2414.8014.98614.73228.5828.9829.3638AM11*0.7510.3010.37810.1881-1/4 - 1229.5029.92129.4643/4 - 2017.8017.95817.67837.3137.6938.1048AM12*1.510.5010.67610.3751-3/8 - 1232.8033.09632.6397/8 - 2021.0021.13320.85343.6644.0444.4558AM12*1.2510.8010.91210.6471-1/2 - 1236.0036.27135.8141 - 2024.0024.30824.02855.5855.9656.3668A2 - 11-1/2英制管螺纹规格钻孔径NPT1-1/2 - 11-1/2螺 纹 攻 牙 钻 孔 径 和 滚 造 径 对 照 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
常用公制螺纹钻底孔钻头直径
螺纹
直径d 螺距t 钻头直径D
铸铁、青铜、黄铜 钢、可锻铸铁、紫铜、层压板
2 0.4 1.6 1.6
0.25 1.75 1.75
2.5 0.45 2.05 2.05
0.35 2.15 2.15
3 0.5 2.5 2.5
0.35 2.65 2.65
4 0.7 3.3 3.3
0.5 3.5 3.5
5 0.8 4.1 4.2
0.5 4.5 4.5
6 1 4.9 5
0.75 5.2 5.2
8 1.25 6.6 6.7
1 6.9 7
0.75 7.1 7.2
10 1.5 8.4 8.5
1.25 8.6 8.7
1 8.9 9
0.75 9.1 9.2
12 1.75 10.1 10.2
1.5 10.4 10.5
1.25 10.6 10.7
1 10.9 11
14 2 11.8 12
1.5 12.4 12.5
1 12.9 13
16 2 13.8 14
1.5 14.4 14.5
1 14.9 15
18 2.5 15.3 15.5
2 15.8 16
1.5 16.4 16.5
1 16.9 17
20 2.5 17.3 17.5
2 17.8 18
1.5 18.4 18.5
1 18.9 19
22 2.5 19.3 19.5
2 19.8 20
1.5 20.4 20.5
1 20.9 21
24 3 20.7 21
2 21.8 22
1.5 22.4 22.5
1 22.9 23
