螺絲攻牙鉆孔徑和滾絲徑對照表

1、螺絲攻牙鉆孔徑和滾絲徑對照表 公制粗螺紋 美制粗螺紋 規(guī)格 標準徑 2級牙鉆孔徑規(guī)格（UNC） 標準徑 級牙鉆孔徑2 最大最小 最大 最小M1.00.25 0.75 0.785 0.729 NO.1-64(1.854) 1.55 1.582 1.425 M1.10.25 0.85 0.885 0.829 NO.2-56(2.184) 1.80 1.871 1.695 0.25 M1.20.95 0.985 0.985 NO.3-48(2.515) 2.10 2.146 1.941 M1.40.3 1.10 1.142 1.075 NO.4-40(2.845) 2.30 2.385 2.157

2、0.35 M1.61.25 1.321 1.221 NO.5-40(3.175) 2.60 2.697 2.487 M1.70.35 1.35 1.421 1.321 NO.6-32(3.505) 2.80 2.895 2.642 0.35 M1.81.45 1.521 1.421 NO8-32(4.166) 3.40 3.53 3.302 0.4 M2.01.60 1.679 1.567 NO.10-24(4.826) 3.90 3.962 3.683 0.45 M2.21.75 1.838 1.713 NO.12-24(5.486) 4.50 4.597 4.344 0.4 M2.31.9

3、0 1.979 1.867 1/4-20 5.10 5.257 4.979 0.45 M2.52.10 2.138 2.013 5/16-18 6.60 6.731 6.401 0.45 M2.62.20 2.238 2.113 3/8-16 8.00 8.153 7.798 0.5 M3.02.50 2.599 2.459 7/16-14 9.40 9.55 9.144 0.6 M3.02.40 2.440 2.280 1/2-13 10.80 11.023 10.592 0.6 M3.52.90 3.010 2.850 9/16-12 12.20 12.446 11.989 0.7 M4.

4、03.30 3.422 3.242 5/8-11 13.60 12.868 13.386 0.75 M4.03.25 3.326 3.106 3/4-10 16.50 18.840 16.307 M4.50.75 3.80 3.878 3.688 7/8-9 19.50 19.761 19.177 M5.00.8 4.20 4.334 4.134 1 22.20 22.606 21.971 M5.00.9 4.10 4.170 3.930 1-1/8-7 25.00 25.349 24.638 M6.01.0 5.00 5.153 4.917 1-1/4-7 28.20 28.524 27.8

5、13 M7.01.0 6.00 6.153 5.917 1-3/8-6 30.80 31.115 30.353 M8.01.25 6.80 6.912 6.647 1-1/2-6 34.00 34.290 33.528 M9.01.25 7.80 7.912 7.647 1-3/4-5 39.50 39.827 38.964 1.5 M108.50 8.676 8.376 2-4-1/2 45.20 45.593 44.679 M111.5 9.50 9.676 9.376 M121.75 10.30 10.441 10.106 M142.0 12.00 12.210 11.835 2.0 M

6、1614.00 14.210 13.835 M182.5 15.50 15.744 15.294 2.5 M2017.50 17.744 17.294 M222.5 19.50 19.744 19.294 3.0 M2421.00 21.252 20.752 3.0 M2724.00 24.252 23.752 3.5 M3026.50 26.771 26.211 簽名檔： 螺絲攻牙鉆孔徑和滾絲徑對照表 公制細螺紋 美制細螺紋 規(guī)格 標準徑 2級牙鉆孔徑規(guī)格（UNC） 標準徑 級牙鉆孔徑2 最大最小 最大 最小M1.00.2 0.80 0.821 0.783 NO.0-80(1.524) 1.

7、25 1.305 1.182 M1.10.2 0.90 0.921 0.883 NO.1-72(1.854) 1.55 1.612 1.474 0.2 M1.21.00 1.021 0.983 NO.2-64(2.184) 1.85 1.912 1.756 M1.40.2 1.20 1.221 1.183 NO.3-56(2.515) 2.10 2.197 2.025 0.2 M1.61.40 1.421 1.383 NO.4-48(2.845) 2.40 2.458 2.271 M1.70.2 1.45 1.500 1.460 NO.5-44(3.175) 2.70 2.740 2.551

8、0.2 M1.81.60 1.621 1.583 NO.6-40(3.505) 2.90 3.022 2.820 0.25 M2.01.75 1.785 1.729 NO.8-36(4.166) 3.50 3.606 3.404 0.25 M2.21.95 1.985 1.929 NO.10-32(4.826) 4.10 4.165 3.963 0.25 M2.32.05 2.061 2.001 NO.12-28(5.846) 4.60 4.724 4.496 0.35 M2.52.20 2.221 2.121 1/4-28 5.50 5.588 5.360 0.35 M2.62.20 2.2

9、46 2.186 5/16-24 6.90 7.035 6.782 0.35 M3.02.70 2.721 2.621 3/8-24 8.50 8.636 8.382 0.35 M3.53.20 3.221 3.121 7/16-20 9.90 10.033 9.729 0.5 M4.03.50 3.599 3.459 1/2-20 11.50 11.607 11.329 0.5 M4.54.00 4.099 3.959 9/16-18 12.90 13.081 12.751 0.5 M5.04.50 4.599 4.459 5/8-18 14.50 14.681 14.351 M5.50.5

10、 5.00 5.099 4.959 3/4-16 17.50 17.678 17.323 M6.00.75 5.30 5.378 5.188 7/8-14 20.50 20.675 20.270 M6.00.5 5.50 5.550 5.400 1-12 23.20 23.571 23.114 M7.00.75 6.30 6.378 6.188 1-1/8-12 26.50 26.746 26.289 M7.00.5 6.50 6.550 6.400 1-1/4-12 29.50 29.921 29.464 M8.01.0 7.00 7.153 6.917 1-3/8-12 32.80 33.

11、096 32.639 M8.00.75 7.30 7.378 7.188 1-1/2-12 36.00 36.271 35.814 0.5 M8.07.50 7.520 7.400 M9.01.0 8.00 8.153 7.917 M9.00.75 8.30 8.378 8.188 M101.25 8.80 8.912 8.647 1.0 M109.00 9.153 8.917 M100.75 9.30 9.378 9.188 0.5 M109.50 9.520 9.400 螺絲攻牙鉆孔徑和滾絲徑對照表 公制細螺紋 美制細螺紋 規(guī)格 標準徑 2級牙鉆孔徑 UNC規(guī)格（） 標準徑 級牙鉆孔徑2

12、最大 最小 最大 最小1.0 M1110.00 10.153 9.917 M110.75 10.30 10.378 10.188 M121.5 10.50 10.676 10.376 M121.25 10.80 10.912 10.647 M121.0 11.00 11.153 10.917 M120.5 11.50 11.520 11.400 M141.5 12.50 12.676 12.376 M141.0 13.00 13.153 12.917 M151.5 13.50 13.676 13.376 1.0 M1514.00 14.153 13.917 M161.5 14.50 14.67

13、6 14.376 M161.0 15.00 15.153 14.917 M171.5 15.50 15.676 15.376 1.0 M1716.00 16.153 15.917 M182.0 16.00 16.210 15.835 1.5 M1816.50 16.676 16.376 M181.0 17.00 17.153 16.917 2.0 M2018.00 18.210 17.835 M201.5 18.50 18.676 18.376 1.0 M2019.00 19.153 18.917 2.0 M2220.00 20.210 19.835 1.5 M2220.50 20.676 2

14、0.376 M221.0 21.00 21.153 20.917 M242.0 22.00 22.210 21.835 M241.5 22.50 22.676 22.376 M241.0 23.00 23.153 22.917 M252.0 23.00 23.210 22.835 M251.5 23.50 23.676 23.376 M251.0 24.00 24.153 23.917 M261.5 24.50 24.676 24.376 2.0 M2725.00 25.210 24.835 M271.5 25.50 25.676 25.376 M271.0 26.00 26.153 25.9

15、17 M282.0 26.00 26.210 25.835 1.5 M2826.50 26.676 26.376 M281.0 27.00 27.153 26.917 3.0 M3027.00 27.252 26.752 M302.0 28.00 28.210 27.835 1.5 M3028.50 28.676 28.376 M301.0 29.00 29.153 28.917 2.0 M3230.00 30.210 29.835 1.5 M3230.50 30.676 30.376 3.0 M3330.00 30.252 29.752 M332.0 31.00 31.210 30.835

16、1.5 M3331.50 31.676 31.376 M351.5 33.50 33.676 33.376 3.0 M3633.00 33.252 32.752 M362.0 34.00 34.210 33.835 1.5 M3634.50 34.676 34.376 簽名檔： 螺絲攻牙鉆孔徑和滾絲徑對照表 公制擠壓絲攻鉆孔徑 美制擠壓絲攻鉆孔徑 規(guī)格精度等級 ）規(guī)格（UNC 精度等級G4-G6 G7-G8 G9 G4-G6 G7-G8 G9 0.25 M1.00.86 0.88 NO.2-56UNC 1.94 0.25 M1.10.96 0.98 NO.3-48 2.23 M1.20.25

17、1.06 1.08 NO.4-40 2.50 M1.40.3 1.24 1.25 NO.5-40 2.83 0.35 M1.61.41 1.43 NO.6-32 3.07 0.35 M1.71.51 1.53 NO.8-32 3.73 3.77 0.35 M1.81.61 1.63 NO.10-24 4.24 4.3 M2.00.4 1.78 1.80 NO.12-24 4.90 4.96 M2.20.45 1.95 1.98 1/4-20 5.72 0.4 M2.32.08 2.10 5/16-18 7.24 0.45 M2.52.25 2.28 3/8-16 8.74 8.81 M2.60

18、.45 2.35 2.38 7/16-14 10.20 10.30 M3.00.5 2.73 2.75 1/2-13 11.27 11.82 0.6 M3.53.17 3.20 NO.2-64UNF 1.97 0.7 M4.03.62 3.65 3.69 NO.3-56 2.27 0.8 M5.04.56 4.60 4.64 NO.4-48 2.56 M6.01.0 5.45 5.50 5.55 NO.5-44 2.86 1.0 M7.06.45 6.50 6.55 NO.6-40 3.16 1.25 M8.07.31 7.38 7.44 NO.8-36 3.78 1.5 M109.18 9.

19、25 9.32 NO.10-32 4.39 4.43 1.25 M109.31 9.38 9.44 NO.12-28 4.99 5.04 1.75 M1211.04 11.12 11.21 1/4-28 5.85 5.90 1.25 M1211.31 11.38 11.44 5/16-24 7.36 7.41 3/8-24 9.00 7/16-20 10.48 10.54 1/2-20 12.07 12.13 簽名檔： 美制特細螺紋 英制電器螺紋 規(guī)格 標準徑 2級牙鉆孔徑規(guī)格 鉆孔徑 最大 最小NO.12-32 4.70 4.826 4.623 2BA 4.0-4.2 -32 1/4 5.6

20、0 5.690 5.486 3BA 5/16 -32 7.10 7.264 7.087 4BA 3.0-3.2 3/8 -32 8.70 8.865 8.661 5BA 2.7-2.8 7/16 -28 10.20 10.338 10.135 6BA 2.4-2.5 1/2 -28 11.80 11.938 11.709 -24 9/16 13.20 13.386 13.132 5/8 -24 14.80 14.986 14.732 -20 3/4 17.80 17.958 17.678 7/8 -20 21.00 21.133 20.853 1 -20 24.00 24.308 24.028

21、 簽名檔： 螺絲攻牙鉆孔徑和滾絲徑對照表 英制螺紋 公制螺紋 針車用螺紋 規(guī)格(UNEF) 鉆孔徑規(guī)格 滾絲徑 規(guī)格 滾絲徑硬材 軟材W 1/8 - 40 2.65 2.60 M30.5 2.63-2.60 SM1/8-40 2.735-2.688 W 5/32 - 32 3.25 3.20 0.6 M3.02.56-2.53 SM1/8-44 2.769-2.722 W 3/16 - 24 3.75 3.70 M3.50.6 3.06-3.03 SM9/64-40 3.128-3.083 W 1/4 - 20 5.10 5.00 0.7 M4.03.49-3.45 SM11/64-40 3.

22、855-3.805 W 5/16 - 18 6.60 6.50 0.75 M4.03.45-3.41 SM3/16-32 4.205-4.155 W 3/8 - 16 8.00 7.90 M4.50.75 3.96-3.92 SM3/16-28 4.143-4.093 W 7/16 - 14 9.40 9.30 0.8 M5.04.43-4.38 SM7/32-32 5.003-4.955 W 1/2 - 12 10.70 10.50 M5.00.9 4.36-4.31 SM15/64-28 5.325-5.570 W 9/16 - 12 12.30 12.00 M6.01.0 5.30-5.

23、25 SM1/4-40 5.890-5.735 W 5/8 - 11 13.70 13.50 M7.01.0 6.30-6.25 SM1/4-28 5.721-5.366 W 3/4 - 10 16.70 16.50 M8.01.0 7.28-7.23 SM9/32-28 6.508-6.648 W 7/8 - 9 19.50 19.30 M8.01.25 7.12-7.07 SM11/32-28 8.092-8.432 W1 - 8 22.40 22.00 SM3/8-28 8.880-8.015 W 1-1/8 - 7 25.00 24.80 SM7/16-28 10.466-10.401

24、 W 1 - 1/4 - 7 28.30 28.00 SM7/16-16 10.037-9.967 SM1/2-20 11.819-11.749 13.400-13.425 SM9/26-20 簽名檔： 英制管螺紋 英制管螺紋 美制管螺紋 規(guī)格 PS 1/16 - 28 PS 1/8 - 28 標準徑 6.50 8.50 鉆孔徑 規(guī)格 PT 1/16 - 28 PT 1/8 - 28 標準徑有交牙部之長（最度中?。┲懵菅?徑6.244 8.249 標準長度（最小）中之毋螺牙 徑6.384 8.388 規(guī)格1/16 - 27 1/8 - 27 鉆孔徑 最大6.632 8.637 最小 6.49

25、0 8.495 使用絞刀時 6.10 8.10 不用絞刀 時6.20 8.20 NPT NPS 6.35 8.74 使用絞刀 時6.10 8.33 不用絞刀 時6.25 8.43 PS 1/4 - 19 11.40 11.549 11.341 PT 1/4 - 19 10.70 11.00 10.962 11.174 1/4 - 18 10.72 11.13 11.13 PS 3/8 - 19 15.00 15.054 14.846 PT 3/8 - 19 14.20 14.50 14.448 14.658 3/8 - 18 14.27 14.27 14.68 PS 1/2 - 14 18.50 18.773 18.489 PT 1/2 - 14 17.60 18.00 17.979 18.263 1/2 - 14 17.48 17.86 18.26 PS 3/4 -14 24.00 24.259 23.975 PT 3/4 - 14 23.00 23.50 23.378 23.663 3/4 -