常用螺丝攻牙前钻孔直径对照表
螺纹攻牙-钻孔直径对照表
36.00 36.271 35.814
公制迫牙丝攻钻孔径(挤压丝锥)
规格
精度等级
G1-G6 G7-G8
G9
M1.0*0.25
0.86 0.88 螺孔小径..
M1.1*0.25
0.96 0.98
..
M1.2*0.251.06源自1.08..M1.4*0.3
1.24 1.25
..
M1.6*0.35
1.41 1.43
M27*1.0
26.00 26.153 25.917
M18*2.5 15.50 15.744 15.294
M28*2.0
26.00 26.210 25.835
M20*2.5 17.50 17.744 17.294
M28*1.5
26.50 26.676 26.376
M22*2.5 19.50 19.744 19.294
M33*3.0
30.00 30.252 29.752
M1.1*0.2 0.90 0.921 0.883
M33*2.0
31.00 31.210 30.835
M1.2*0.2 1.00 1.021 0.983
M33*1.5
31.50 31.676 31.376
M1.4*0.2 1.20 1.221 1.183
M5.5*0.5 5.00 5.099 4.959 NO.6-40(3.505) 2.90 3.022 2.820
M6.0*0.75 5.30 5.378 5.188 NO.8-36(4.166) 3.50 3.606 3.404
M6.0*0.5 5.50 5.550 5.400 NO.10-32(4.826) 4.10 4.165 3.963
螺纹攻牙钻孔径对照表
-18 12.90 13.081 12.751 3/8" -24
G7
9.10 8.99 5/8
-11 13.60 13.868 13.386
5/8
-18 14.50 14.681 14.351 7/16" -20
G8
10.62 10.48 3/4
-10 16.60 16.840 16.307
3/4
-16 17.50 17.678 17.323 1/2" -20
2.90 3.30 3.80 4.20 5.00 6.00 6.80 7.80 8.50 9.50 10.30 12.00 14.00 15.50 17.50 19.50 21.00 24.00 26.50 29.50 32.00 35.00
3.010 3.422 3.878 4.334 5.153 6.153 6.912 7.912 8.676 9.676 10.441 12.210 14.210 15.744 17.744 19.744 21.252 24.252 26.771 29.771 32.270 35.270
螺纹攻牙钻孔径对照表
公制粗螺纹
公制细螺纹
公制细螺纹
规格
标准径
2级牙钻孔径
最大
最小
规格
标准径
2级牙钻孔径
最大
最小
规格
标准径
2级牙钻孔径
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 M2.5 0.45 M2.6 0.45 M3.0 0.5
螺丝攻牙孔径对照表
M12*1.0 M12*0.5 M14*1.5 M14*1.0 M15*1.5 M15*1.0 M16.1.5 M16*1.0 M17*1.5 M17*1.0 M18*2.0 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 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 M30*3.0 M30*2.0 M30*1.5 M30*1.0 M32*2.0 M32*1.5 M33*1.0 M33*2.0 M33*1.5 M35*1.5 M36*3.0 M36*2.0 M36*1.5
10.917 11.400 12.376 12.917 13.376 13.917 14.376 14.917 15.376 15.917 15.835 16.976 16.917 17.835 18.376 18.917 19.835 20.376 20.917 21.835 22.376 22.917 22.835 23.376 23.917 24.376 24.835 25.376 25.917 25.835 26.376 26.917 26.752 27.835 28.376 28.917 29.835 30.376 29.752 30.835 31.376 33.376 32.752 33.835 34.376
1.25 1.55 1.85 2.10 2.40 2.70 2.90 3.50 4.10 4.60 5.50 6.90 8.50 9.90 11.50 12.90 14.50 17.50 20.50 23.20 26.50 29.50 32.80 36.00
标准螺丝攻牙钻孔径对照表【大全】
标准公制螺母攻牙要钻个小于螺纹大径的孔来攻牙。
这个孔的大小就是螺纹小径到螺纹中径。
如何确认孔径大小就要参照对照表啦,一起来看看吧！螺丝攻牙钻孔径对照表- 14 (3.175) 1- 11 30.20 30.472 30.111NO.6 - 32(3.505)2.80 2.895 2.6421-1/4 -11 38.80 39.133 38.771NO.8 - 32(4.166)3.40 3.530 3.3021-1/2 -11 44.70 45.026 44.664NO.10 -24(4.826)3.90 3.962 3.6832- 11 56.50 56.837 56.475NO.12 -24(5.486)4.50 4.597 4.3441/4 - 20 5.10 5.257 4.979英制管螺纹5/16 - 18 6.60 6.731 6.401 PF规格(新规格G) 标准径最大最小3/8 - 16 8.00 8.153 7.7987/16 - 14 9.40 9.550 9.1441/16 -286.70 6.843 6.561 1/2 - 13 10.90 11.023 10.592 1/8- 288.70 8.848 8.566 9/16 - 12 12.20 12.446 11.989 1/4- 1911.70 11.89 11.445 5/8 - 11 13.60 13.868 13.386 3/8- 1915.20 15.395 14.950 3/4 - 10 16.60 16.840 16.3071/2 - 14 19.00 19.172 18.6317/8- 919.60 19.761 19.177中之毋螺牙径1/16 -6.10 6.20 6.244 6.384281/8 -8.10 8.20 8.249 8.388281/4 -10.70 11.00 10.962 11.174193/8 -14.20 14.50 14.448 14.658191/2 -17.60 18.00 17.979 18.263143/4 -23.00 23.50 23.378 23.66314129.00 29.50 29.459 29.822- 111-1/4 -37.50 38.00 37.976 38.339111-1/2 -43.40 44.00 43.869 44.23211254.90 55.50 55.412 55.844- 11美制管螺纹针车用螺纹规格钻孔径规格标准径最大最小N P TN P SSM1/16 - 80 1.25 1.281 1.211使用绞刀时不用绞刀时SM5/64 - 64 1.55 1.593 1.5131/16 -275.946.15 6.35 SM3/32 - 56 1.90 1.936 1.841 1/8- 278.33 8.43 8.74 SM3/32 -100 2.10 2.156 2.081 1/4- 1810.72 11.13 11.13 SM1/8 - 32 2.30 2.393 2.233 3/8- 1814.27 14.27 14.68 SM1/8 - 40 2.50 2.551 2.421 1/2- 1417.48 17.86 18.26 SM1/8 - 44 2.50 2.605 2.485 3/4-1422.63 23.01 23.42 SM1/8 - 48 2.60 2.657 2.5471-11-1/228.58 28.98 29.36 SM9/64 - 32 2.70 2.79 2.6301-1/4 -11-1/237.31 37.69 38.10 SM9/64 - 40 2.90 2.948 2.8181-1/2-11-1/2 43.26 43.66 44.45SM11/64-323.50 3.584 3.4242-11-1/2 55.17 55.58 56.36SM11/64-403.70 3.742 3.612SM3/16 - 24 3.60 3.658 3.498英制螺纹SM3/16 - 28 3.80 3.844 3.684 规格钻孔径SM3/16 - 32 3.90 3.98 3.820 硬材软材SM3/16 - 40 4.05 4.138 4.008 W 1/8- 402.65 2.60 SM7/32 - 32 4.70 4.774 4.614 W 5/32- 323.25 3.20 SM15/64 -28 5.00 5.0554.875 W 3/16- 243.75 3.70 SM1/4 - 24 5.20 5.266 5.086 W 1/4- 205.10 5.00 SM1/4 - 28 5.40 5.452 5.272 W 5/16- 186.60 6.50 SM1/4 - 40 5.60 5.726 5.596 W 3/8- 168.00 7.90 SM9/32 - 20 5.70 5.824 5.634 W 7/16- 149.40 9.30 SM9/32 - 28 6.20 6.256 6.066 W 1/2- 1210.70 10.50 SM5/16 - 18 6.30 6.444 6.254 W 9/16- 1212.30 12.00 SM5/16 - 24 6.80 6.864 6.674W 5/813.70 13.50 SM5/16 - 28 6.90 7.05 6.860 - 11W 3/416.70 16.50 SM11/32 -28 7.70 7.843 7.653 - 10W 7/819.50 19.30 SM3/8 - 18 7.90 8.053 7.843 - 9W 122.40 22.00 SM3/8 - 28 8.50 8.637 8.447 - 825.00 24.00 SM7/16 - 16 9.30 9.44 9.220 W1-1/8- 728.30 28.00 SM7/16 - 28 10.10 10.224 10.034 W1-1/4- 7W 5/166.60 6.50 SM1/2 - 12 10.30 10.42 10.180 - 18W 3/88.00 7.90 SM1/2 - 20 11.30 11.41 11.190 - 16W 7/169.40 9.30 SM1/2 - 28 11.70 11.812 11.622 - 14W 1/210.70 10.50 SM9/16 - 20 12.90 13.018 12.778 - 12W 9/16 12.30 12.00- 12W 5/8- 1113.70 13.50W 3/4- 1016.70 16.50W 7/8- 919.50 19.30W 1- 822.40 22.00W1-1/8- 725.00 24.00W1-1/4- 728.30 28.00公制迫牙丝攻钻孔径美制迫牙丝攻钻孔径规格精度最大最小规格精度最大最小M1.0×0.25 G4 0.92 0.891-64UNCG5 1.76 1.68M1.2×0.25 G4 1.12 1.092-56G4 2.04 1.96M1.4×0.30 G4 1.3 1.263-48G4 2.35 2.250.80 -80UNC M6.0×1.0 G7 5.59 5.491-72G5 1.77 11.7M7.0×1.0 G7 6.59 6.492-64G4 2.06 1.98M8.0×1.25 G7 7.49 7.363-56G4 2.37 2.29M10×1.50 G7 9.34 9.224-48G5 2.68 2.59M10×1.25 G7 9.49 9.355-44G5 2.99 2.9M12×1.75 G8 11.23 11.096-40G5 3.29 3.19M12×1.25 G9 11.5 11.368-36G5 3.91 3.8110 -32 G6 4.53 4.44英制电器螺纹12 -28 G6 5.13 5.03 规格钻孔径1/4" -28 G7 6 5.91 2BA 4.0-4.2 5/16" -24 G7 7.53 7.42 3BA 3.4-3.6 3/8" -24 G7 9.1 8.99 4BA 3.0-3.2 7/16" -20 G8 10.62 10.48 5BA 2.7-2.8 1/2" -20 G8 12.2 12.06 6BA 2.4-2.5扩展资料：攻丝方法：攻丝是用一定的扭矩将丝锥旋入要钻的底孔中加工出内螺纹。
螺丝攻牙钻孔径和滚丝径对照表
螺丝攻牙钻孔径和滚丝径对照表螺丝攻牙钻孔径和滚丝径对照表公制粗螺纹美制粗螺纹规格标准径2级牙钻孔径规格（UNC）标准径2级牙钻孔径最大最小最大最小M1.0×0.25 0.75 0.785 0.729NO.1-64(1.854) 1.55 1.582 1.425M1.1×0.25 0.85 0.885 0.829NO.2-56(2.184) 1.80 1.871 1.695M1.2×0.25 0.95 0.985 0.985NO.3-48(2.515) 2.10 2.146 1.941M1.4×0.3 1.10 1.142 1.075NO.4-40(2.845) 2.30 2.385 2.157M1.6×0.35 1.25 1.321 1.221NO.5-40(3.175) 2.60 2.697 2.487M1.7×0.35 1.35 1.421 1.321NO.6-32(3.505) 2.80 2.895 2.642M1.8×0.35 1.45 1.521 1.421NO8-32(4.166) 3.40 3.53 3.302M2.0×0.4 1.60 1.679 1.567NO.10-24(4.826) 3.90 3.962 3.683M2.2×0.45 1.75 1.838 1.713NO.12-24(5.486) 4.50 4.597 4.344M2.3×0.4 1.90 1.979 1.867 1/4-20 5.10 5.257 4.979M2.5×0.45 2.10 2.138 2.013 5/16-18 6.60 6.731 6.401M2.6×0.45 2.20 2.238 2.113 3/8-16 8.00 8.153 7.798M3.0×0.5 2.50 2.599 2.459 7/16-14 9.40 9.55 9.144M3.0×0.6 2.40 2.440 2.280 1/2-13 10.80 11.023 10.592M3.5×0.6 2.90 3.010 2.850 9/16-12 12.20 12.446 11.989M4.0×0.7 3.30 3.422 3.242 5/8-11 13.60 12.868 13.386M4.0×0.75 3.25 3.326 3.106 3/4-10 16.50 18.840 16.307M4.5×0.75 3.80 3.878 3.688 7/8-9 19.50 19.761 19.177M5.0×0.8 4.20 4.334 4.134 1 22.2022.606 21.971M5.0×0.9 4.10 4.170 3.930 1-1/8-7 25.00 25.349 24.638M6.0×1.0 5.00 5.153 4.917 1-1/4-7 28.20 28.524 27.813M7.0×1.0 6.00 6.153 5.917 1-3/8-6 30.80 31.115 30.353M8.0×1.25 6.80 6.912 6.647 1-1/2-6 34.00 34.290 33.528M9.0×1.25 7.80 7.912 7.647 1-3/4-5 39.50 39.827 38.964M10×1.5 8.50 8.676 8.376 2-4-1/2 45.20 45.593 44.679M11×1.5 9.50 9.676 9.376M12×1.75 10.30 10.441 10.106M14×2.0 12.00 12.210 11.835M16×2.0 14.00 14.210 13.835M18×2.5 15.50 15.744 15.294M20×2.5 17.50 17.744 17.294M22×2.5 19.50 19.744 19.294M24×3.0 21.00 21.252 20.752M27×3.0 24.00 24.252 23.752M30×3.5 26.50 26.771 26.211螺丝攻牙钻孔径和滚丝径对照表公制细螺纹美制细螺纹规格标准径2级牙钻孔径规格（UNC）标准径2级牙钻孔径最大最小最大最小M1.0×0.2 0.80 0.821 0.783 NO.0-80(1.524) 1.25 1.305 1.182M1.1×0.2 0.90 0.921 0.883 NO.1-72(1.854) 1.55 1.612 1.474M1.2×0.2 1.00 1.021 0.983 NO.2-64(2.184) 1.85 1.912 1.756M1.4×0.2 1.20 1.221 1.183 NO.3-56(2.515) 2.10 2.197 2.025M1.6×0.2 1.40 1.421 1.383 NO.4-48(2.845) 2.40 2.458 2.271M1.7×0.2 1.45 1.500 1.460NO.5-44(3.175) 2.70 2.740 2.551M1.8×0.2 1.60 1.621 1.583NO.6-40(3.505) 2.90 3.022 2.820M2.0×0.25 1.75 1.785 1.729NO.8-36(4.166) 3.50 3.606 3.404M2.2×0.25 1.95 1.985 1.929NO.10-32(4.826) 4.10 4.165 3.963M2.3×0.25 2.05 2.061 2.001NO.12-28(5.846) 4.60 4.724 4.496M2.5×0.35 2.20 2.221 2.121 1/4-28 5.50 5.588 5.360M2.6×0.35 2.20 2.246 2.186 5/16-24 6.90 7.035 6.782M3.0×0.35 2.70 2.721 2.621 3/8-24 8.50 8.636 8.382M3.5×0.35 3.20 3.221 3.121 7/16-20 9.90 10.033 9.729M4.0×0.5 3.50 3.599 3.459 1/2-20 11.50 11.607 11.329M4.5×0.5 4.00 4.099 3.959 9/16-18 12.90 13.081 12.751M5.0×0.5 4.50 4.599 4.459 5/8-18 14.50 14.681 14.351M5.5×0.5 5.00 5.099 4.959 3/4-16 17.50 17.678 17.323M6.0×0.75 5.30 5.378 5.188 7/8-14 20.50 20.675 20.270M6.0×0.5 5.50 5.550 5.400 1-12 23.20 23.571 23.114M7.0×0.75 6.30 6.378 6.188 1-1/8-12 26.50 26.746 26.289M7.0×0.5 6.50 6.550 6.400 1-1/4-1229.50 29.921 29.464M8.0×1.0 7.00 7.153 6.917 1-3/8-12 32.80 33.096 32.639M8.0×0.75 7.30 7.378 7.188 1-1/2-12 36.00 36.271 35.814M8.0×0.5 7.50 7.520 7.400M9.0×1.0 8.00 8.153 7.917M9.0×0.75 8.30 8.378 8.188M10×1.25 8.80 8.912 8.647M10×1.0 9.00 9.153 8.917M10×0.75 9.30 9.378 9.188M10×0.5 9.50 9.520 9.400M11×1.0 10.00 10.153 9.917M11×0.75 10.30 10.378 10.188M12×1.5 10.50 10.676 10.376M12×1.25 10.80 10.912 10.647M12×0.5 11.50 11.520 11.400 M14×1.5 12.50 12.676 12.376 M14×1.0 13.00 13.153 12.917 M15×1.5 13.50 13.676 13.376 M15×1.0 14.00 14.153 13.917 M16×1.5 14.50 14.676 14.376 M16×1.0 15.00 15.153 14.917 M17×1.5 15.50 15.676 15.376 M17×1.0 16.00 16.153 15.917 M18×2.0 16.00 16.210 15.835 M18×1.5 16.50 16.676 16.376 M18×1.0 17.00 17.153 16.917 M20×2.0 18.00 18.210 17.835 M20×1.5 18.50 18.676 18.376 M20×1.0 19.00 19.153 18.917 M22×2.0 20.00 20.210 19.835 M22×1.5 20.50 20.676 20.376 M22×1.0 21.00 21.153 20.917M24×1.5 22.50 22.676 22.376 M24×1.0 23.00 23.153 22.917 M25×2.0 23.00 23.210 22.835 M25×1.5 23.50 23.676 23.376 M25×1.0 24.00 24.153 23.917 M26×1.5 24.50 24.676 24.376 M27×2.0 25.00 25.210 24.835 M27×1.5 25.50 25.676 25.376 M27×1.0 26.00 26.153 25.917 M28×2.0 26.00 26.210 25.835 M28×1.5 26.50 26.676 26.376 M28×1.0 27.00 27.153 26.917 M30×3.0 27.00 27.252 26.752 M30×2.0 28.00 28.210 27.835 M30×1.5 28.50 28.676 28.376 M30×1.0 29.00 29.153 28.917 M32×2.0 30.00 30.210 29.835 M32×1.5 30.50 30.676 30.376M33×3.0 30.00 30.252 29.752M33×2.0 31.00 31.210 30.835M33×1.5 31.50 31.676 31.376M35×1.5 33.50 33.676 33.376M36×3.0 33.00 33.252 32.752M36×2.0 34.00 34.210 33.835M36×1.5 34.50 34.676 34.376螺丝攻牙钻孔径和滚丝径对照表公制挤压丝攻钻孔径美制挤压丝攻钻孔径规格精度等级规格（UNC）精度等级G4-G6 G7-G8 G9 G4-G6 G7-G8 G9M1.0×0.25 0.86 0.88 －NO.2-56UNC 1.94 －－M1.1×0.25 0.96 0.98 －NO.3-48 2.23 －－M1.2×0.25 1.06 1.08 －NO.4-40 2.50 －－M1.4×0.3 1.24 1.25 －NO.5-40 2.83 －－M1.6×0.35 1.41 1.43 －NO.6-32 3.07 －－－M1.8×0.35 1.61 1.63 －NO.10-24 4.24 4.3 －M2.0×0.4 1.78 1.80 －NO.12-24 4.90 4.96 －M2.2×0.45 1.95 1.98 －1/4-20 －5.72 －M2.3×0.4 2.08 2.10 －5/16-18 －7.24 －M2.5×0.45 2.25 2.28 －3/8-16 －8.74 8.81 M2.6×0.45 2.35 2.38 －7/16-14 －10.20 10.30M3.0×0.5 2.73 2.75 －1/2-13 －11.27 11.82M3.5×0.6 3.17 3.20 －NO.2-64UNF 1.97－－M4.0×0.7 3.62 3.65 3.69 NO.3-56 2.27 －－M5.0×0.8 4.56 4.60 4.64 NO.4-48 2.56 －－－M7.0×1.0 6.45 6.50 6.55 NO.6-40 3.16 －－M8.0×1.25 7.31 7.38 7.44 NO.8-36 3.78 －－M10×1.5 9.18 9.25 9.32 NO.10-32 4.394.43 －M10×1.25 9.31 9.38 9.44 NO.12-28 4.99 5.04 －M12×1.75 11.04 11.12 11.21 1/4-28 5.85 5.90 －M12×1.25 11.31 11.38 11.44 5/16-24 7.36 7.41 －3/8-24 －9.00 －7/16-20 －10.48 10.541/2-20 －12.07 12.13美制特细螺纹英制电器螺纹规格标准径2级牙钻孔径规格钻孔径最大最小NO.12-32 4.70 4.826 4.623 2BA 4.0-4.2 1/4 -32 5.60 5.690 5.486 3BA5/16 -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 2.4-2.51/2 -28 11.80 11.938 11.7099/16 -24 13.20 13.386 13.1325/8 -24 14.80 14.986 14.7323/4 -20 17.80 17.958 17.6787/8 -20 21.00 21.133 20.8531 -20 24.00 24.308 24.028螺丝攻牙钻孔径和滚丝径对照表英制螺纹公制螺纹针车用螺纹规格(UNEF) 钻孔径规格滚丝径规格滚丝径硬材软材W 1/8 - 40 2.65 2.60 M3×0.5 2.63-2.60SM1/8-40 2.735-2.688W 5/32 - 32 3.25 3.20 M3.0×0.6 2.56-2.53 SM1/8-44 2.769-2.722W 3/16 - 24 3.75 3.70 M3.5×0.6 3.06-3.03 SM9/64-40 3.128-3.083W 1/4 - 20 5.10 5.00 M4.0×0.7 3.49-3.45 SM11/64-40 3.855-3.805W 5/16 - 18 6.60 6.50 M4.0×0.75 3.45-3.41 SM3/16-32 4.205-4.155W 3/8 - 16 8.00 7.90 M4.5×0.75 3.96-3.92 SM3/16-28 4.143-4.093W 7/16 - 14 9.40 9.30 M5.0×0.8 4.43-4.38 SM7/32-32 5.003-4.955W 1/2 - 12 10.70 10.50 M5.0×0.9 4.36-4.31 SM15/64-28 5.325-5.570W 9/16 - 12 12.30 12.00 M6.0×1.05.30-5.25 SM1/4-40 5.890-5.735W 5/8 - 11 13.70 13.50 M7.0×1.0 6.30-6.25 SM1/4-28 5.721-5.366W 3/4 - 10 16.70 16.50 M8.0×1.0 7.28-7.23 SM9/32-28 6.508-6.648W 7/8 - 9 19.50 19.30 M8.0×1.25 7.12-7.07 SM11/32-28 8.092-8.432W1 - 8 22.40 22.00 SM3/8-288.880-8.015W 1-1/8 - 7 25.00 24.80 SM7/16-28 10.466-10.401W 1 - 1/4 - 7 28.30 28.00 SM7/16-16 10.037-9.967SM1/2-20 11.819-11.749SM9/26-20 13.400-13.425英制管螺纹英制管螺纹美制管螺纹规格标准径钻孔径规格标准径有交牙部之长度（最小）中之毋螺牙内径标准长度（最小）中之毋螺牙内径规格钻孔径最大最小使用绞刀时不用绞刀时NPT NPS 使用绞刀时不用绞刀时PS 1/16 - 28 6.50 6.632 6.490 PT 1/16 - 28 6.10 6.20 6.244 6.384 1/16 - 27 6.10 6.25 6.35PS 1/8 - 28 8.50 8.637 8.495 PT 1/8 - 28 8.10 8.20 8.249 8.388 1/8 - 27 8.33 8.43 8.74PS 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 11.13PS 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 14.68PS 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 18.26PS 3/4 -14 24.00 24.259 23.975 PT 3/4 - 14 23.00 23.50 23.378 23.663 3/4 - 14 22.63 23.01 23.42PS 1 - 11 30.20 30.471 30.111 PT 1- 11 29.00 29.50 29.459 29.822 1 - 11-1/2 28.58 28.98 29.36PS 1-1/4 - 11 38.80 39.132 38.772 PT 1-1/4 - 11 37.50 38.00 37.976 38.3391-1/4-11-1/2 37.31 37.69 38.10PS 1-1/2 - 11 44.80 45.025 44.665 PT 1-1/2 - 11 43.40 44.00 43.869 44.2321-1/2-11-1/2 43.66 44.04 44.45PS 2 - 11 56.50 56.836 56.476 PT 2 - 11 54.90 55.50 55.412 55.844 2 - 11 - 1/2 55.58 55.96 56.36。
螺纹攻牙-钻孔直径对照表
M4.5*0.5 4.00 4.099 3.959 NO.4-48(2.845) 2.40 2.458 2.271
M5.0*0.5 4.50 4.599 4.459 NO.5-44(3.175) 2.70 2.740 2.551
M5.5*0.5 5.00 5.099 4.959 NO.6-40(3.505) 2.90 3.022 2.820
5/8 - 18
14.50 14.681 14.351
M10*1.0 9.00 9.153 8.917
3/4 - 16
17.50 17.678 17.323
M10*0.75 9.30 9.378 9.188
7/8 - 14
20.50 20.675 20.270
M10*0.5 9.50 8.520 9.400
M7.0*1.0
6.45 6.50
6.55
M8.0*1.25
7.31 7.38
7.44
M10*1.5
9.18 9.25
9.32
M10*1.25
9.31 9.38
9.44
M12*1.75
11.04 11.12 11.21
M12*1.25
11.31 11.38 11.44
美制迫牙丝攻钻孔径
规格 NO. 2-56UNC
7/16 - 20
9.90 10.033 9.729
M9.0*1.0 8.00 8.153 7.917
1/2 - 20
11.50 11.607 11.329
M9.0*0.75 8.30 8.378 8.188
3/16 - 18
12.90 13.081 12.751
M10*1.25 8.80 8.912 8.647
螺丝攻牙孔径对照表
11.00 11.50 12.50 13.00 13.50 14.00 14.50 15.00 15.50 16.00 16.00 16.50 17.00 18.00 18.50 19.00 20.00 20.50 21.00 22.00 22.50 23.00 23.00 23.50 24.00 24.50 25.00 25.50 26.00 26.00 26.50 27.00 27.00 28.00 28.50 29.00 30.00 30.50 30.00 31.00 31.50 33.50 33.00 34.00 34.50
M1.0*0.25 0.86 0.88 M1.1*0.25 0.96 0.98 M1.2*0.25 1.06 1.08 M1.4*0.30 1.24 1.25 M1.6*0.35 1.41 1.43 M1.7*0.35 1.51 1.53 M1.8*0.35 1.61 1.63 M2.0*0.40 1.78 1.80 M2.2*0.45 1.95 1.98 M2.3*0.40 2.08 2.10 M2.5*0.45 2.25 2.28 M2.6*0.45 2.35 2.38 M3.0*0.50 2.73 2.75 M3.5*0.60 3.17 3.20 M4.0*0.70 3.62 3.65 3.69 M5.0*0.80 4.56 4.60 4.64 M6.0*1.00 5.45 5.50 5.55 M7.0*1.00 6.45 6.50 6.55 M8.0*1.25 7.31 7.38 7.44 M10*1.50 9.18 9.25 9.32 M10*1.25 9.31 9.38 9.44 M12*1.75 11.04 11.12 11.21 M12*1.25 11.31 11.38 11.44 注:迫牙丝攻之钻孔径,在上表所列之数值,由 于被加工材料之材质,硬度,形状,尺寸等之影 响,多少会有所变动,因此于参考上表之同时, 亦精增减若干。
螺纹攻牙-钻孔直径对照表
M4.0*0.5 3.50 3.599 3.459 NO.3-56(2.515) 2.10 2.197 2.025
M4.5*0.5 4.00 4.099 3.959 NO.4-48(2.845) 2.40 2.458 2.271
M5.0*0.5 4.50 4.599 4.459 NO.5-44(3.175) 2.70 2.740 2.551
9.31 9.38
9.44
M12*1.75
11.04 11.12 11.21
M12*1.25
11.31 11.38 11.44
美制迫牙丝攻钻孔径
规格 NO. 2-56UNC
精度等级
G1-G6 G7-G8 G9
1.94
..
..
NO. 3-48
2.23
..
..
NO. 4-40
2.50
..
..
NO. 5-40
******本表 依据二级牙
螺 纹 攻 牙 钻 孔 径 和 滚 造 径 对 照 表.
公制粗螺 纹
公制细螺 纹
规格
标准径
二级牙钻孔径 最大 最小
规格
标准径
二级牙钻孔径 最大 最小
M1.0*0.25 0.75 0.785 0.729
M12*1.0
11.00 11.153 10.917
M1.1*0.25 0.85 0.885 0.829
M28*1.0
27.00 27.153 26.917
M24*3.0 21.00 21.252 20.752
M30*3.0
27.00 27.252 26.752
M27*3.0 24.00 24.252 23.752
M30*2.0
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