螺纹攻牙底孔对照表

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1、PS规格 最大 最小 最大 最小 (新规格Rp) M1.0*0.25 0.75 0.785 0.729 11.00 11.153 10.917 1 -64UNC G5 1.76 1.68 M1.0 0.25 G4 0.92 0.89 1/16-28 6.5 6.632 6.490 M1.1*0.25 0.85 0.885 0.829 11.50 11.520 11.400 2 -56 G4 2.04 1.96 M1.2 0.25 G4 1.11 1.09 1/8-28 8.5 8.637 8.495 M1.2*0.25 0.95 0.985 0.929 12.50 12.676 12.376

2、3 -48 G4 2.35 2.25 M1.4 0.30 G4 1.30 1.26 1/4-19 11.4 11.549 11.341 M1.4*0.3 1.10 1.142 1.075 13.00 13.153 12.917 4 -40 G5 2.64 2.54 M1.6 0.35 G4 1.47 1.43 3/8-19 14.9 15.054 14.846 M1.6*0.35 1.25 1.321 1.221 13.50 13.676 13.376 5 -40 G5 2.97 2.87 M1.7 0.35 G4 1.57 1.52 1/2-14 18.6 18.773 18.489 M1.

3、7*0.35 1.35 1.421 1.321 14.00 14.153 13.917 6 -32 G5 3.22 3.11 M1.8 0.35 G4 1.67 1.62 3/4-14 24.0 24.259 23.975 M1.8*0.35 1.45 1.521 1.421 14.50 14.676 14.376 8 -32 G6 3.89 3.78 M2.0 0.40 G4 1.84 1.79 1-11 30.2 30.472 30.110 M2*0.4 1.60 1.679 1.567 15.00 15.153 14.917 10 -24 G6 4.44 4.30 M2.2 0.45 G

4、5 2.04 1.98 11/4-11 38.8 39.133 38.771 M2.2*0.45 1.75 1.838 1.713 15.50 15.676 15.376 12 -24 G6 5.07 4.96 M2.3 0.40 G4 2.14 2.09 11/2-11 44.7 45.026 44.664 M2.3*0.4 1.90 1.979 1.867 16.00 16.153 15.917 1/4 -20 G7 5.86 5.73 M2.5 0.45 G5 2.34 2.27 2-11 56.5 56.837 56.475 M2.5*0.45 2.10 2.138 2.013 16.

5、00 16.210 15.835 5/16 -18 G7 7.38 7.23 M2.6 0.45 G5 2.44 2.37 M2.6*0.45 2.20 2.238 2.113 16.50 16.676 16.376 3/8 -16 G7 8.89 8.72 M3.0 0.50 G5 2.82 2.75 M3*0.5 2.50 2.599 2.459 17.00 17.153 16.917 7/16 -14 G8 10.40 10.02 M3.5 0.60 G5 3.27 3.19 M3.5*0.6 2.90 3.010 2.850 18.00 18.210 17.835 1/2 -13 G8

6、 11.92 11.70 M4.0 0.70 G6 3.72 3.65 M4*0.7 3.30 3.422 3.242 18.50 18.676 18.376 0 -80UNF G5 1.45 1.39 M5.0 0.80 G6 4.67 4.59 SM1/16 -80 1.25 1.281 1.211 M4.5*0.75 3.80 3.878 3.688 19.00 19.153 18.917 1 -72 G5 1.77 1.70 M6.0 1.00 G7 5.59 5.49 SM5/64 -64 1.55 1.593 1.513 M5*0.8 4.20 4.334 4.134 20.00

7、20.210 19.835 2 -64 G4 2.06 1.98 M7.0 1.00 G7 6.59 6.48 SM3/32 -56 1.9 1.936 1.841 M6*1.0 5.00 5.153 4.917 20.50 20.676 20.376 3 -56 G4 2.37 2.29 M8.0 1.25 G7 7.49 7.36 SM3/32-100 2.1 2.156 2.081 M7*1.0 6.00 6.153 5.917 21.00 21.153 20.917 4 -48 G5 2.68 2.59 M10 1.5 G7 9.34 9.22 SM1/8 -32 2.3 (2.393

8、) (2.233) M8*1.25 6.80 6.912 6.647 22.00 22.210 21.835 5 -44 G5 2.99 2.90 M10 1.25 G7 9.49 9.35 SM1/8 -40 2.5 2.551 2.421 M9*1.25 7.80 7.912 7.647 22.50 22.676 22.376 6 -40 G5 3.29 3.19 M12 1.75 G8 11.23 11.09 SM1/8 -44 2.5 2.605 2.485 M10*1.5 8.50 8.676 8.376 23.00 23.153 22.917 8 -36 G5 3.91 3.81

9、M12 1.25 G9 11.50 11.36 SM1/8 -48 2.6 2.657 2.547 M11*1.5 9.50 9.676 9.376 23.00 23.210 22.835 10 -32 G6 4.53 4.44 SM9/64 -32 2.7 (2.790) (2.630) M12*1.75 10.30 10.441 10.106 23.50 23.676 23.376 12 -28 G6 5.13 5.03 SM9/64 -40 2.9 2.948 2.818 M14*2.0 12.00 12.210 11.835 24.00 24.153 23.917 1/4 -28 G7

10、 6.00 5.91 SM11/64-32 3.5 3.584 3.424 M16*2.0 14.00 14.210 13.835 24.50 24.676 24.376 5/16 -24 G7 7.53 7.42 SM11/64-40 3.7 3.742 3.612 M18*2.5 15.50 15.744 15.294 25.00 25.210 24.835 3/8 -24 G7 9.10 8.99 使用铰刀时 不使用铰刀时 SM3/16 -24 3.6 3.658 3.498 M20*2.5 17.50 17.744 17.294 25.50 25.676 25.376 7/16 -20

11、 G8 10.62 10.48 1/16 -27 5.94 6.15 6.35 SM3/16 -28 3.8 3.844 3.684 M22*2.5 19.50 19.744 19.294 26.00 26.153 25.917 1/2 -20 G8 12.20 12.06 1/8 -27 8.33 8.43 8.74 SM3/16 -32 3.9 3.980 3.820 M24*3.0 21.00 21.252 20.752 26.00 26.210 25.835 1/4 -18 10.72 11.13 11.13 SM3/16 -40 4.05 4.138 4.008 M27*3.0 24

12、.00 24.252 23.752 26.50 26.676 26.376 3/8 -18 14.27 14.27 14.68 SM7/32-32 4.7 4.774 4.614 M30*3.5 26.50 26.771 26.211 27.00 27.153 26.917 1/2 -14 17.48 17.86 18.26 SM15/64-28 5.0 5.055 4.875 M33*3.5 29.50 29.771 29.211 27.00 27.252 26.752 最大 最小 3/4 -14 22.63 23.01 23.42 SM1/4-24 5.2 5.266 5.086 M36*

13、4.0 32.00 32.270 31.670 28.00 28.210 27.835 No.12 -32 4.70 4.826 4.823 1 -11-1/2 28.58 28.98 29.36 SM1/4-28 5.4 5.452 5.272 M39*4.0 35.00 35.270 34.670 28.50 28.676 28.376 1/4 -32 5.60 5.689 5.487 1-1/4 -11-1/2 37.31 37.69 38.10 SM1/4-40 5.6 5.726 5.596 29.00 29.153 28.917 5/16 -32 7.10 7.264 7.087

14、1-1/2 -11-1/2 43.26 43.66 44.45 SM9/32-20 5.7 5.824 5.634 30.00 30.210 29.835 3/8 -32 8.70 8.864 8.662 2 -11-1/2 55.17 55.58 56.36 SM9/32-28 6.2 6.256 6.066 30.50 30.676 30.376 7/16 -28 10.20 10.337 10.135 SM5/16-18 6.3 6.444 6.254 最大 最小 30.00 30.252 29.752 1/2 -28 11.80 11.938 11.710 SM5/16-24 6.8

15、6.864 6.674 M1.0*0.2 0.80 0.821 0.783 31.00 31.210 30.835 9/16 -24 13.20 13.385 11.132 SM5/16-28 6.9 7.050 6.860 M1.1*0.2 0.90 0.921 0.883 31.50 31.676 31.376 5/8 -24 14.80 14.968 14.732 SM11/32-28 7.7 7.843 7.653 M1.2*0.2 1.00 1.021 0.983 33.50 33.676 33.376 3/4 -20 17.80 17.957 17.679 SM3/8-18 7.9

16、 8.053 7.843 M1.4*0.2 1.20 1.221 1.183 33.00 33.252 32.752 7/8 -20 21.00 21.132 20.854 (新规格Rc) 使用铰刀时 不使用铰刀时 SM3/8-28 8.5 8.637 8.447 M1.6*0.2 1.40 1.421 1.383 34.00 34.210 33.835 1 -20 24.00 24.307 24.029 1-16-28 6.1 6.2 6.244 6.384 SM7/16-16 9.3 9.440 9.220 M1.7*0.2 1.45 1.500 1.460 34.50 34.676 34

17、.376 1/8-28 8.1 8.2 8.249 8.388 SM7/16-28 10.1 10.224 10.034 M1.8*0.2 1.60 1.621 1.583 1/4-19 10.7 11.0 10.962 11.174 SM1/2-12 10.3 10.420 10.180 M2.0*0.25 1.75 1.785 1.729 3/8-19 14.2 14.5 14.448 14.658 SM1/2-20 11.3 11.410 11.190 M2.2*0.25 1.95 1.985 1.929 最大 最小 1/2-14 17.6 18.0 17.979 18.263 SM1/

18、2-28 11.7 11.812 11.622 M2.3*0.35 2.05 2.061 2.001 最大 最小 1.55 1.582 1.425 3/4-14 23.0 23.5 23.378 23.663 SM9/16-20 12.9 13.018 12.778 M2.5*0.35 2.20 2.221 2.121 1.25 1.305 1.182 1.80 1.871 1.695 1-11 29.0 29.5 29.459 29.822 M2.6*0.35 2.20 2.246 2.186 1.55 1.612 1.474 2.10 2.146 1.941 1 1/4-11 37.5 3

19、8.0 37.976 38.339 M3.0*0.35 2.70 2.721 2.621 1.85 1.912 1.756 2.30 2.385 2.157 1 1/2-11 43.4 44.0 43.869 44.232 M3.5*0.35 3.50 3.599 3.459 2.10 2.197 2.025 2.60 2.697 2.487 2-11 54.9 55.5 55.412 55.844 硬材 软材 M4.5*0.5 4.00 4.099 3.959 2.40 2.458 2.271 2.80 2.895 2.642 W1/8-40 2.65 2.60 M5.0*0.5 4.50

20、4.599 4.459 2.70 2.740 2.551 3.40 3.530 3.302 PF规格 W5/32-32 3.25 3.20 M5.5*0.5 5.00 5.099 4.959 2.90 3.022 2.820 3.90 3.962 3.683 (新规格G) W3/16-24 3.75 3.70 M6.0*0.5 5.50 5.550 5.400 3.50 3.606 3.404 4.50 4.597 4.344 1/16-28 6.7 6.843 6.561 W1/4-20 5.10 5.00 M6.0*0.75 5.30 5.378 5.188 4.10 4.165 3.96

21、3 1/4 -20 5.10 5.257 4.979 1/8-28 8.7 8.848 8.566 W5/16-18 6.60 6.50 M7.0*0.5 6.50 6.550 6.400 4.60 4.724 4.496 5/16 -18 6.60 6.731 6.401 1/4-19 11.7 11.890 11.445 W3/8-16 8.00 7.90 M7.0*0.75 6.30 6.378 6.188 1/4 -28 5.50 5.588 5.360 3/8 -16 8.00 8.153 7.798 3/8-19 15.2 15.395 14.950 W7/16-14 9.40 9

22、.30 M8.0*0.5 7.50 7.520 7.400 5/16 -24 6.90 7.035 6.782 7/16 -14 9.40 9.550 9.144 1/2-14 19.0 19.172 18.631 W1/2-12 10.70 10.50 M8.0*0.75 7.30 7.378 7.188 3/8 -24 8.50 8.636 8.382 1/2 -13 10.90 11.023 10.592 5/8-14 21.0 21.128 20.587 W9/16-12 12.30 12.00 M8.0*1.0 7.00 7.153 6.917 7/16 -20 9.90 10.03

23、3 9.729 9/16 -12 12.20 12.446 11.989 3/4-14 24.5 24.658 24.117 W5/8-11 13.70 13.50 M9.0*0.75 8.30 8.378 8.188 1/2 -20 11.50 11.607 11.329 5/8 -11 13.60 13.868 13.386 7/8-14 28.2 28.418 27.877 W3/4-10 16.70 16.50 M9.0*1.0 8.00 8.153 7.917 9/16 -18 12.90 13.081 12.751 3/4 -10 16.60 16.840 16.307 1-11

24、30.6 30.931 30.291 W7/8-9 19.50 19.30 M10*0.5 9.50 9.520 9.400 5/8 -18 14.50 14.681 14.351 7/8 -9 19.60 19.761 19.177 11/8-11 35.2 35.579 34.939 W1-8 22.40 22.00 M10*0.75 9.30 9.378 9.188 3/4 -16 17.50 17.678 17.323 1 -8 22.30 22.606 21.971 11/4-11 39.2 39.592 38.952 W1-1/8-7 25.00 24.80 M10*1.0 9.0

25、0 9.153 8.917 7/8 -14 20.50 20.675 20.270 1-1/8 -7 25.00 25.349 24.638 11/2-11 45.0 45.485 44.845 W1-1/4-7 28.30 28.00 M10*1.25 8.80 8.912 8.647 1 -12 23.30 23.571 23.114 1-1/4 -7 28.20 28.524 27.813 13/4-11 51.0 51.428 50.788 M11*1.0 10.00 10.153 9.917 1-1/8 -12 26.50 26.746 26.289 1-3/8 -6 30.80 3

26、1.115 30.353 2-11 57.0 57.296 56.656 M11*0.75 10.30 10.378 10.188 1-1/4 -12 29.60 29.921 29.464 1-1/2 -6 34.00 34.290 33.528 M12*1.5 10.50 10.676 10.376 1-3/8 -12 32.80 33.096 32.639 1-3/4 -5 39.50 39.827 38.964 M12*1.25 10.80 10.912 10.647 1-1/2 -12 36.00 36.271 35.814 2 -4-1/2 45.20 45.593 44.679

27、标准径 最大 最小No.10-24(4.826) No.12-24(5.486) No.10-32(4.826) No.12-28(5.486) 英制螺纹 规格 钻孔径 螺 纹 攻 牙 底 孔 对 照 表 PT规格 標准徑 有效牙部之長 度(最小)中之 母螺牙內徑 標准長度(最 小)中之母螺牙 內徑 公制粗螺纹 2级牙钻孔径规格 标准径 No.8-32(4.166) (UNEF) 美制细螺纹 No.4-40(2.845) No.5-40(3.175) 美制粗螺纹 标准径 2级牙钻孔径 M30*3.0 M33*3.0 No.6-32(3.505) 规格 (UNF) M15*1.0 M16*1.5

28、 M22*1.5 M22*1.0 M24*2.0 公制细螺纹 M17*1.5 M17*1.0 M18*2.0 M18*1.5 M20*2.0 M20*1.5 M20*1.0 M18*1.0 M22*2.0 公制细螺纹 标准径 2级牙钻孔径 M16*1.0 规格 M12*1.0 M12*0.5 M14*1.5 M14*1.0 M15*1.5 M24*1.5 M24*1.0 M25*2.0 M25*1.5 M25*1.0 M26*1.5 M27*2.0 M27*1.5 M27*1.0 M28*2.0 M28*1.5 M28*1.0 M32*1.5 M33*2.0 M36*1.5 M30*2.0 M

29、30*1.5 M30*1.0 M32*2.0 M33*1.5 M35*1.5 M36*3.0 M36*2.0 规格 规格 (UNC) No.2-64(2.184) No.8-36(4.166) 规格 规格 标准径 2级牙钻孔径 No.3-56(2.515) No.4-48(2.845) No.5-44(3.175) No.6-40(3.505) 美制迫牙丝攻钻孔径 No.1-64(1.854) No.2-56(2.184) 2级牙钻孔径 精度 最大 最小 美制特细螺纹 标准径 No.3-48(2.515) 标准径 2级牙钻孔径 No.1-72(1.854) No.0-80(1.524) 英制管螺纹 标准径 最大 最小 NPT 公制迫牙丝攻钻孔径 规格 精度 最大 最小 NPS 美制管螺纹 规格 钻孔径 針車用螺纹 规格 标准径 最大 最小