螺纹底孔表

17.50 17.678 17.323 NO.4-40(2.845) 20.50 20.675 20.270 NO.5-40(3.175) 23.20 23.571 23.114 NO.6-32(3.505) 26.50 26.746 26.289 NO.8-32(4.166) 29.50 29.921 29.464 NO.10-24(4.826) 32.80 33.096 32.639 NO.12-24(5.486)
公制粗螺纹
美制细螺纹
美制特细螺纹
英制螺纹
英制管螺纹
规格
2级牙钻孔径 标准径
最大 最小
规格
3级牙钻孔径 标准径
最大 最小
规格
3级牙钻孔径 标准径
最大 最小
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
2.30 2.60 2.80 3.40 3.90 4.50
2.385 2.697 2.895 3.530 3.962 4.597
2.157 2.487 2.642 3.302 3.683 4.344
1-1/2-12
36.0 36.270 35.814
公制细螺纹
规格
标准径 2级牙钻孔径 最大 最小
M12*1.0
29.36
1-1/4-11-1/2 37.31 37.69
38.10
1-1/2-11-1/2 43.66 44.04
44.45
2-11-1/2 55.58 55.96
56.36
丝攻钻孔径
规格
精度等级
RH4.5.6 RH7.8
RH9
M1.0*01.1*0.25 0.96
公制细螺纹
2级牙钻孔径 规格 标准径
最大 最小
M1.0*0.2 0.80 M1.1*0.25 0.90
0.821 0.921
0.783 0.883
M1.2*0.25 1.00 1.021 0.983
M1.4*0.2 M1.6*0.2 M1.7*0.2 M1.8*0.2 M2.0*0.25 M2.2*0.25 M2.3*0.25 M2.5*0.35
1.20 1.40 1.45 1.60 1.75 1.95 2.05 2.20
1.221 1.421 1.500 1.621 1.785 1.985 2.061 2.221
1.183 1.385 1.460 1.583 1.729 1.929 2.001 2.121
3/4-16 7/8-14 1-12 1-1/8-12 1-1/4-12 1-3/8-12
2.60 3.20 3.70 5.00 6.50 7.90 9.30 10.50 12.00 13.50
16.70 16.50
标准径 规格 使用铰 不使
刀 用铰
PT 1/16-28 6.10 6.20
6.244
6.384
PT 1/8-28 8.10 8.50 8.249 8.388
PT 1/4-19 10.70 11.40 10.962 11.174
NO.10-24 4.09-4.05
NO.12-24 4.75-4.70
1/4-20
5.50-5.45
5/16-18
6.98-6.93
3/8-16
8.45-8.40
7/16-14
9.89-9.83
1/2-14
17.48 17.86
18.26
3/4-14
22.63 23.01
23.42
1-11-1/2 28.58 18.98
M4.0*0.75 3.25 3.326 3.108
5/8-18
14.50 14.681 14.351 NO.3-48(2.615) 2.10 2.146 1.941
M4.5*0.75 M5.0*0.8 M6.0*0.8 M6.0*1.0 M7.0*1.0 M8.0*1.25
3.80 4.20 4.10 5.00 6.00 6.80
3.878 4.334 4.170 5.153 6.153 6.912
3.688 4.134 3.930 4.917 5.917 6.647
M9.0*1.25 7.80 7.912 7.647
M10*1.5 8.50 8.676 8.376
M11*1.5 9.50 9.676 9.376 M12*1.75 10.30 10.441 10.706 M14*2.0 12.00 12.210 11.835 M16*2.0 14.00 14.210 13.835 M18*2.5 15.50 15.744 15.294 M20*2.5 17.50 17.744 17.294 M22*2.5 19.50 19.744 19.294 M24*3.0 21.00 21.252 20.752 M27*3.0 24.00 24.252 23.752 M30*3.5 26.50 26.771 26.211
M18*1.5 M18*1.0 M20*2.0 M20*1.5 M20*1.0 M22*2.0 M22*1.5 M22*1.0 M24*2.0 M24*1.5 M24*1.0
16.50 16.676 16.376 17.00 17.153 16.917 18.00 18.210 17.835 18.500 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
M17*1.5
15.50 15.676 15.376 1-3/8-6
30.80 31.115 30.353
M17*1.0
16.00 16.153 15.917 1-1/2-6
34.00 34.290 33.628
M18*2.0
16.00 16.210 15.835 1-3/4-5
39.50 39.827 38.964
1.25 1.55 1.85 2.10 2.40 2.70 2.90 3.50 4.10 4.60
1.305 1.612 1.912 2.197 2.458 2.740 3.022 3.606 4.165 4.724
1.182 1.474 1.756 2.025 2.271 2.551 2.820 3.404 3.963 4.496
1-20
24.0 24.308 24.028
美制粗螺纹
M3.0*0.5
M3.0*0.6 M3.5*0.6 M4.0*0.7
2.50
2.40 2.90 3.3.
2.599
2.440 3.010 3.422
2.459
2.280 2.850 3.242
3/8-24
7/16-20 1/2-20 9/16-18
英制螺纹滚造径
规格
1/16-27 1/8-27 1/4-18
钻孔径 使用铰 不使用
刀 铰刀
6.10 6.25
8.33 8.43
10.72 11.13
NPS
6.35 8.74 11.13
规格
滚造径
3/8-18
14.27 14.27
14.68
W 3/16-24 4.08-4.05
W 1/4-20 5.51-5.46
5.257
6.731 8.153 9.550 11.023 12.446 12.868 16.840 19.761 22.606 25.349 28.524
4.979
6.401 7.798 9.144 10.592 11.989 13.386 16.307 19.177 21.971 24.638 27.813
PT1-1/2-11 43.40 44.80 43.869 44.232
PT2-11
54.90 56.5 55.412 55.844
美制管螺纹
W 7/8-9 19.50 19.30
W 1-8 22.40 22.00
W 1-1/8-7 25.00 24.80 W 1-1/4-7 28.30 28.00
2-4-1/2
45.20 45.593 44.679
公制螺纹
规格
滚造径
M3*0.5
2.63-2.60
M3*0.6
2.66-2.63
M3.5*0.6
3.06-3.03
M4.0*0.7
3.49-3.45
M4.0*0.75
3.45-3.41
M4.5*0.75
3.96-3.92
M5.0*0.8
4.43-4.38
W 5/16-18 7.01-6.95
W 3/8-16 8.42-8.41
W 7/16-14 9.92-8.85
W 1/2-12 11.31-11.24
W 9/16-12 12.89-12.82
英制粗螺纹
规格 滚造径
NO.5-40
2.70-2.67
NO.6-32
2.80-2.91
NO.8-32
3.60-3.57
NO.12-32 1/4-32 5/16-32 3*8-32 7/16-28 1/2-28 9/16-24 5/8-24 3/4-20 7/8-20
4.70 5.60 7.10 8.70 10.20 11.80 13.20 14.80 17.80 21.00
4.826 5.690 7.264 8.865 10.338 11.938 13.386 14.986 17.958 21.133