螺纹攻牙对照表
螺丝攻牙孔径对照表
0.729 0.829 0.929 1.075 1.221 1.321 1.421 1.567 1.713 1.867 2.013 2.113 2.459 2.280 2.850 3.242 3.106 3.688 4.134 3.930 4.917 5.917 6.647 7.647 8.376 9.376 10.160 11.835 13.835 15.294 17.294 19.294 20.752 23.752 26.211
9.153 9.378 9.520 10.153 10.378 10.676 10.912
8.917 9.188 9.400 8.917 10.188 10.376 10.647
公制细螺纹
规格
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
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。
美制粗螺纹
规格(UNC)
No 164(1.854) No 256(2.184) No 348(2.515) No 440(2.845) No 540(3.175)
螺纹攻牙底孔对照表
N0.5-40 2.6 N0.12-24 4.5 1/2.-13 10.8 .11/8-7 25
N0.6-32 2.8 .1/4-20 5.1 .6/16-12 12.2 .11/4-7 28.2
N0.8-32 3.4 5/16-18 6.6 .5/8-11 13.5 .13/8-6 30.8
N0.10-24 3.8 3./8-16 8.2 .3/4-10 16.5 .11/2-6 34
29.5
M48× 5
32 / /
35 / /
37.5 / /
40.5 / /
43
表2 英制螺纹攻牙底孔对照表 螺纹规格 底孔孔径 N0.1-81 1.55 N0.2-56 1.8 N0.3-48 2.1
N0.03-56 2.1
N0.4-40 2.3
第2页，共3页
螺纹规格 底孔孔径 螺纹规格 底孔孔径 螺纹规格 底孔孔径 螺纹用于公所有产品内螺纹的加工及检测。
2、加工要求
1、内螺纹分公制内螺纹与英制内螺纹。 2、内螺纹的攻牙底孔，见表1、表2。 表1 公制螺纹攻牙底孔对照表 螺纹规格 底孔孔径 螺纹规格 底孔孔径 螺纹规格 底孔孔径 螺纹规格 底孔孔径 螺纹规格 底孔孔径 螺纹规格 底孔孔径 螺纹规格 底孔孔径 螺纹规格 底孔孔径 螺纹规格 底孔孔径 M1× 0.25 0.75 M1.7× 0.35 1.35 M2.5× 0.45 2.1 M4× 0.7 3.3 M6× 1 5 M11× 1.5 9.5 M20× 2.5 17.5 M33× 3.5 M1.1× 0.25 0.85 M1.8× 0.35 1.45 M2.6× 0.45 2.2 M4× 0.75 3.25 M7× 1 6 M12× 1.75 10.3 M22× 2.5 19.5 M36× 4 M1.2× 0.25 0.95 M2× 0.4 1.6 M3× 0.5 2.5 M4.5× 0.75 3.8 M8× 1.25 6.8 M14× 2 12 M24× 3 21 M39× 4 M1.4× 0.3 1.1 M2.2× 0.4 1.75 M3× 0.6 2.4 M5× 0.8 4.2 M9× 1.25 7.8 M16× 2 14 M27× 3 24 M42× 4.5 M1.6× 0.35 1.25 M2.3× 0.4 1.9 M3.5× 0.6 2.9 M5× 0.9 4.1 M10× 1.5 8.5 M18× 2.5 15.5 M30× 3.5 26.5 M45× 4.5
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
螺丝攻牙钻孔径和滚造径对照表
精度等级 G4－G6 G7－G8 G9
0.86 0.88 0.96 0.98 1.06 1.08 1.24 1.25 1.41 1.43 1.51 1.53 1.61 1.63 1.78 1.80 1.95 1.98 2.08 2.10 2.25 2.28 2.35 2.38 2.73 2.75 3.17 3.20 3.62 3.65 3.69 4.56 4.60 4.64 5.45 5.50 5.55 6.45 6.50 6.55 7.31 7.38 7.44 9.18 9.25 9.32 9.31 9.38 9.44 11.04 11.12 11.21 11.31 11.38 11.44
公制粗螺纹
公制细螺纹
无沟丝攻钻孔径
英制螺纹
美制粗螺纹
规格
标准径
2级牙钻孔径 最大 最小
规格
标准径
M1.0×0.25 M1.1×0.25 M1.2×0.25 M1.4×0.30 M1.6×0.35 M1.7×0.35 M1.8×0.35 M2.0×0.40 M2.2×0.45 M2.3×0.40
0.75 0.85 0.95 1.10 1.25 1.35 1.45 1.60 1.75 1.90
0.785 0.885 0.985 1.142 1.321 1.421 1.521 1.679 1.838 1.979
0.729 0.829 0.929 1.075 1.221 1.321 1.421 1.567 1.713 1.867
M12×1.00 M12×0.50 M14×1.50 M14×1.00 M15×1.50 M15×1.00 M16×1.50 M16×1.00 M17×1.50 M17×1.00
28.210 27.835
攻牙底孔径对照表
切削丝攻（公制粗牙）
切削丝攻（美制粗牙 UNC）
挤压丝攻（公制螺纹）
螺丝规格 钻头径
2级螺纹底孔径
最小尺寸 最大尺寸
M 1.0×0.25
1.1×0.25 1.2×0.25 1.4×0.3 1.6×0.35 1.7×0.35 1.8×0.35 2.0×0.4 2.2×0.45 2.3×0.4 2.5×0.45 2.6×0.45 3.0×0.6 3.0×0.5 3.5×0.6 4.0×0.75 4.0×0.7 4.5×0.75 5.0×0.9 5.0×0.8 5.5×0.9 6.0×1.0 7.0×1.0 8.0×1.25
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 37.799 40.799 43.297
切削丝攻（公制细牙）
3 -56 4 -48
5 -44
6 -40 8 -36 10 -32 12 -28 1/4 -28 5/16 -24 3/8 -24 7/16 -20 1/2 -20 9/16 -18 5/8 -18 3/4 -16 7/8 -14 1 -12 11/8 -12
6.384 8.388 11.174 14.658 18.263 23.663 29.822 38.339 44.232 55.844
标准径
最大 最小
6.7 8.7 11.7
15.2
19.0
21.0 24.5 28.2 30.6 35.2 39.2 45.0 51.0 57.0
6.843 8.848 11.890
83.0 85.8 83.0 99.5 80.0 80.0 81.2 84.4 80.3 78.4 80.9 83.6 81.3 80.7 85.3 84.8
螺丝攻牙孔径对照表
3.69 4.64 5.55 6.55 7.44 9.32 9.44 11.21 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。
美制粗螺纹
规格(UNC) 标准径 2级牙钻孔径 最大 最小
美制细螺纹
1.182 1.474 1.756 2.025 2.271 2.551 2.820 3.404 3.963 4.496 5.360 6.782 8.382 9.729 11.329 12.751 14.351 17.323 20.270 23.114 26.289 29.464 32.639 35.814
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
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
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
螺纹攻牙-钻孔直径对照表螺纹攻牙钻孔径和滚造径对照表.某某某某某某本表依据二级牙制订公制粗螺纹规格M1.0某0.25M1.1某0.25M1.2某0.25M1.4某0.3M1.6某0.35M1.7某0.35M1.8某0.35M2.0某0.4M2.2某0.45M2.3某0.4M2.5某0.45M2.6某0.45M3.0某0.5M3.0某0.6M3.5某0.6M4.0某0.7M4.0某0.75M4.5某0.75M5.0某0.8M5.0某0.9M6.0某1.0M7.0某1.0M8.0某1.25M9.0某1.25M10某1.5M11某1.5M12某1.75M14某2.0M16某2.0M18某2.5M20某2.5M22某2.5M24某3.0M27某3.0M30某3.5标准径0.750.850.951.101.251.351.451.601.751.902.102.202.502.402.903.30 3.253.804.204.105.006.006.807.808.509.5010.3012.0014.0015.5017.5 019.5021.0024.0026.50二级牙钻孔径最大0.7850.8850.9851.1421.3211.4211.5211.6791.8381.9792.1382.2382.59 92.4403.0103.4223.3263.8784.3344.1705.1536.1536.9127.9128.6769.6 7610.44112.21014.21015.74417.74419.74421.25224.25226.771最小0.7290.8290.9291.0751.2211.3211.4211.5671.7131.8672.0132.1132.45 92.2802.8503.2423.1063.6884.1343.9304.9175.9176.6477.6478.3759.3 7610.10611.83513.83515.29417.29419.29420.75223.75226.211M12某1.0M12某0.5M14某1.5M14某1.0M15某1.5M15某1.0M16某1.5M16某1.0M17某1.5M17某1.0M18某2.0M18某1.5M18某1.0M20某2.0M20某1.5M20某1.0M22某2.0M22某1.5M22某1.0M24某2.0M24某1.5M24某1.0M25某2.0M25某1.5M25某1.0M26某1.5M27某2.0M27某1.5M27某1.0M28某2.0M28某1.5M28某1.0M30某3.0M30某2.0M30某1.5M30某1.0M32某2.0M32某1.5M33某3.0M33某2.0M33某1.5M35某1.5M36某3.0M36某2.0M36某1.511.0011.5012.5013.0013.5014.0014.5015.0015.5016.0016.0016.5017.0018.0018.5019.0020.0020.5021.0022.0022.5023.0023.0023.5024.00 24.5025.0025.5026.0026.0026.5027.0027.0028.0028.5029.0030.0030.5 030.0031.0031.5033.5033.0034.0034.50公制细螺纹规格标准径二级牙钻孔径最大11.15311.52012.67613.15313.67614.15314.67615.15315.67616.15316. 21016.67517.15318.21018.67619.15320.21020.67621.15322.21022.676 23.15323.21022.67624.15324.67625.21025.67626.15326.21026.67627. 15327.25228.21028.67629.15330.21030.67630.25231.21031.67633.676 33.25234.21034.676最小10.91711.40012.37612.91713.37613.91714.37614.91715.37615.91715. 83516.37616.91717.83518.37618.91719.83520.37620.91721.83523.376 22.91722.83523.37623.91724.37624.83525.37625.91725.83526.37626. 91726.75227.83528.37628.91729.83530.37629.75230.83531.37633.376 32.75233.83534.376公制迫牙丝攻钻孔径规格G1-G6M1.0某0.25M1.1某0.25M1.2某0.25M1.4某0.3M1.6某0.35M1.7某0.35M1.8某0.35M2.0某0.4M2.2某0.45M2.3某0.4M2.5某0.45M2.6某0.45M3.0某0.5M3.5某0.6M4.0某0.7M5.0某0.8M6.0某1.0M7.0某1.0M8.0某1.25M10某1.5M10某1.25M12某1.75M12某1.250.860.961.061.241.411.511.611.781.952.082.252.352.733.173.6 24.565.456.457.319.189.3111.0411.31美制迫牙丝攻钻孔径规格G9............................3.694.645.556.557.449.329.4411.21 11.44NO.2-56UNCNO.3-48NO.4-40NO.5-40NO.6-32NO.8-32NO.10-24NO.12-241/43/81/2-20-16-135/16-187/16-14NO.2-64UNFNO.3-56NO.4-48NO.5-44NO.6-40NO.8-36NO.10-32NO.12-291/43/81/2-28-24-205/16-247/16-20英制螺纹规格G9....................8.8110.3011.82......................10.5412.13W1/8-40W5/32-32W3/16-24W1/4-20W5/16-18W3/8-16W7/16-14W1/2-12W9/16-12W5/8-11W3/4-10W7/8W1-9-8精度等级G7-G80.880.981.081.251.431.531.631.801.982.102.282.382.753.203.654 .605.506.507.389.259.3811.1211.38精度等级G1-G61.942.232.502.833.073.734.244.90..........1.972.272.562.863.16 3.784.394.995.857.36......钻孔径硬材2.653.253.755.106.608.009.4010.7012.3013.7016.7019.5022.4025.002 8.30G7-G8..........3.774.304.965.727.248.7410.2011.27............4.435 .045.907.419.0010.4812.07W1-1/8-7W1-1/4-7针车用螺纹规格SM1/8SM1/8-40-44滚造径2.735-2.6882.769-2.7223.128-3.0833.855-3.8054.205-4.1554.143-4.0935.325-5.5705.890-5.7355.721-5.3666.508-6.6488.092-8.4328.880-8.01510.466-10.40110.037-9.95711.319-11.74913.400-13.425SM9/64-40SM11/64-40SM3/16-32美制粗螺纹规格(UNC)NO.1-64(1.854)NO.2-56(2.184)NO.3-48(2.515)NO.4-40(2.845)NO.5-40(3.175)NO.6-32(3.505)NO.8-32(4.166)NO.10-24(4.826)NO.12-24(5.486)1/45/163/87/161/29/165/83/47/811-1/81-1/41-3/81-1/21-3/4-20-18-16-14-13-12-11-10-9-8-7-6-5SM3/16-28标准径1.551.802.102.302.602.803.403.904.505.106.608.009.4010.8012.2013 .6016.5019.5022.2025.0028.2030.8034.0039.5045.20二级牙钻孔径最大1.5821.8712.1462.3852.6972.8953.5303.9624.5975.2576.7318.1539.5 5011.02312.44612.86818.84019.76122.60625.34928.52431.11534.2903 9.82745.593英制管螺纹规格PS1/16-28PSPSPSPSPSPS1/8-281/4-193/8-191/2-143/4-141-11SM7/22-最小1.4521.6951.9412.1572.4872.6423.3023.6834.3444.9796.4017.7989.1 4410.59211.98911.38616.30719.17721.97124.63827.81330.35333.5283 8.96444.679标准径6.508.5011.4015.0018.5024.0030.2038.8044.8056.50钻孔径最大6.6328.63711.54915.05418.77324.25930.47139.13245.02556.836SM15/64-28SM1/4SM1/4-40-28最小6.4908.49511.34114.84618.48923.97530.11138.77244.66556.476SM9/32-28SM11/32-28SM3/8-28公制细螺纹规格M1.0某0.2M1.1某0.2M1.2某0.2M1.4某0.2M1.6某0.2M1.7某0.2M1.8某0.2M2.0某0.25M2.2某0.25M2.3某0.25M2.5某0.35M2.6某0.35M3.0某0.35M3.5某0.35M4.0某0.5M4.5某0.5M5.0某0.5M5.5某0.5M6.0某0.75M6.0某0.5M7.0某0.75M7.0某0.5M8.0某1.0M8.0某0.75M8.0某0.5M9.0某1.0M9.0某0.75M10某1.25M10某1.0M10某0.75M10某0.5M11某1.0M11某0.75M12某1.5M12某1.25SM7/16-28SM7/16-16SM1/2-20标准径0.800.901.001.201.401.451.601.751.952.052.202.202.703.203.504.0 04.505.005.305.506.306.507.007.307.508.008.308.809.009.309.5010.0010.3010.5010.80二级牙钻孔径最大0.8210.9211.0211.2211.4211.5001.6211.7851.9852.0612.2212.2462.7 213.2213.5994.0994.5995.0995.3785.5506.3786.5507.1537.3787.5208 .1538.3788.9129.1539.3788.52010.15310.37810.67610.912最小0.7830.8830.9831.1831.3831.4601.5831.7291.9292.0012.1212.1862.6 213.1213.4593.9594.4594.9595.1885.4006.1886.4006.9177.4887.4007 .9178.1888.6478.9179.1889.4009.91710.18810.37510.647PS1-1/4-11PS1-1/2-11PS2-11SM9/16-20英制管螺纹规格PT1/16-28PT1/8PT1/4PT3/8PT1/2PT3/4PT1-28-19-19-14-14-11标准径最大6.108.1010.7014.2017.6023.0029.0037.5043.4054.90最小6.208.2011.0014.5018.0023.5029.5038.0044.0055.5006.2448.24910.96214.44817.97923.37829.45937.97643.86955.4126.3848.38811.17414.65818.26323.66329.82238.33944.23255.844公制螺纹规格M3某0.5M3.0某0.6M3.5某0.6M4.0某0.7M4.0某0.75M4.5某0.75M5.0某0.8M5.0某0.9M6.0某1.0M7.0某1.0M8.0某1.0M8.0某1.25美制细螺纹规格(UNF)NO.0-80(1.524)NO.1-72(1.854)NO.2-64(2.184)NO.3-56(2.515)NO.4-48(2.845)NO.5-44(3.175)NO.6-40(3.505)NO.8-36(4.166)NO.10-32(4.826)NO.12-28(5.846)1/43/81/25/83/47/81-28-24-20-18-16-14-125/16-247/16-203/16-18滚造径2.63-2.602.56-2.533.06-3.033.49-3.453.45-3.413.96-3.924.43-4.384.36-4.345.30-6.256.30-6.257.28-7.237.12-7.07标准径1.251.551.852.102.402.702.903.504.104.605.505.908.509.9011.5012. 9014.5017.5020.5023.2026.5029.5032.8036.00二级牙钻孔径最大1.3051.6121.9122.1972.4582.7403.0223.6064.1654.7245.5887.0358.6 3610.03311.60713.08114.68117.67820.67523.57126.74629.92133.0963 6.271最小1.1821.4741.7562.0252.2712.5512.8203.4043.9634.4962.3605.7828.3 829.72911.32912.75114.35117.32320.27023.11426.28929.46432.63935 .814PT1-1/4-11PT1-1/2-11PT2-112-4-1/2美制特细螺纹规格(UNEF)NO.12-321/45/163/87/161/29/165/83/47/81-32-32-32-28-28-24-24-20-20-20英制管螺纹钻孔径规格1/16-271/81/43/81/23/41-27-18-18-14-14-11-1/26.108.3310.7214.2717.4822.6328.5837.3143.6655.58标准径4.705.607.108.7010.2011.8013.2014.8017.8021.0024.00二级牙钻孔径最大4.8255.6907.2648.86510.33811.93813.38614.98617.95821.13324.308NPT6.258.4311.1314.2717.8623.0128.9837.6944.0455.96NPS6.358.7411.1314.6818.2523.4229.3638.1044.4556.36英制电器螺纹规格28A38A48A58A68A钻孔径4.0-4.23.0-3.22.7-2.82.4-2.51-1/8-121-1/4-121-3/8-121-1/2-121-1/4-11-1/21-1/2-11-1/22-11-1/2螺纹攻牙钻孔径和滚造径对照表.某某某某某某本表依据二级牙制订径和滚造径对照表.英制螺纹钻孔径软材2.603.203.705.006.507.909.3010.5012.0013.5016.5019.3022.0024.802 8.00针车用螺纹滚造径2.735-2.6882.769-2.7223.128-3.0833.855-3.8054.205-4.1554.143-4.0935.325-5.5705.890-5.7355.721-5.3666.508-6.6488.092-8.4328.880-8.01510.466-10.40110.037-9.95711.319-11.74913.400-13.425公制螺纹滚造径2.63-2.602.56-2.533.06-3.033.49-3.453.45-3.413.96-3.924.43-4.384.36-4.345.30-6.256.30-6.257.28-7.237.12-7.07英制电器螺纹钻孔径4.0-4.23.0-3.22.7-2.82.4-2.5径和滚造径对照表.纹纹螺。
螺丝攻牙钻孔径和滚造径对照表
螺丝攻牙钻孔径和滚造径对照表螺丝攻牙钻孔径和滚造径对照表公制粗螺纹美制粗螺纹规格标准径2级牙钻规格（UN标准2级牙钻最大最小最大最小M1.0×0.25 0.70.70.7NO.1-1.51.5 1.4 M1.1×0.25 0.80.80.8NO.2-1.81.8 1.6 M1.2×0.25 0.90.90.9NO.3-2.12.1 1.9 M1.4×0.3 1.1 1.1 1.0NO.4-2.32.3 2.1 M1.6×0.35 1.2 1.3 1.2NO.5-2.62.6 2.4 M1.7×0.35 1.3 1.4 1.3NO.6-2.82.8 2.6 M1.8×0.35 1.4 1.5 1.4NO8- 3.43.5 3.3 M2.0×0.4 1.6 1.6 1.5NO.1 3.93.9 3.6 M2.2×0.45 1.7 1.8 1.7NO.1 4.54.5 4.3 M2.3×0.4 1.9 1.9 1.81/4- 5.15.2 4.9 M2.5×0.45 2.1 2.1 2.05/16-6.66.7 6.4 M2.6×0.45 2.2 2.2 2.13/8-8.08.17.7 M3.0×0.5 2.5 2.5 2.47/16-9.49.59.1 M3.0×0.6 2.4 2.4 2.21/2-10.11.10. M3.5×0.6 2.9 3.0 2.89/16-12.12.11. M4.0×0.7 3.3 3.4 3.25/8-13.12.13. M4.0×0.75 3.2 3.3 3.13/4-16.18.16. M4.5×0.75 3.8 3.8 3.67/8-9 19.19.19. M5.0×0.8 4.2 4.3 4.1 1 22.22.21. M5.0×0.9 4.1 4.1 3.91-25.25.24. M6.0×1.0 5.0 5.1 4.91-28.28.27. M7.0×1.0 6.0 6.1 5.91-30.31.30. M8.0×1.25 6.8 6.9 6.61-34.34.33. M9.0×1.25 7.87.97.61-39.39.38. M10×1.5 8.58.68.32-4-45.45.44. M11×1.5 9.59.69.3M12×1.75 10.10.10.M14×2.0 12.12.11.M16×2.0 14.14.13.M18×2.5 15.15.15.M20×2.5 17.17.17.M22×2.5 19.19.19.M24×3.0 21.21.20.M27×3.0 24.24.23.M30×3.5 26.26.26.M16丝孔钻14。
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4.30 4.96 5.72
5/16 - 18
..
7.24
3/8 - 16
..
8.74
7/16 - 14
..
10.20
1/2 - 13 NO. 2-64UNF NO. 3-56
.. 1.97 2.27
11.27 .. ..
NO. 4-48
2.56
..
NO. 5-44
2.86
..
NO. 6-40
3.16
SM9/64 - 40 3.128-3.083
SM11/64 - 40 3.855-3.805
SM3/16 - 32 4.205-4.155
SM3/16 - 28 4.143-4.093
SM7/22 - ? ?
SM15/64 - 28 5.325-5.570
SM1/4 - 40 5.890-5.735
标准径
0.75 0.85 0.95 1.10 1.25 1.35 1.45 1.60 1.75 1.90 2.10 2.20 2.50 2.40 2.90 3.30 3.25 3.80 4.20 4.10 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
M3.5*0.35 3.20 3.221 3.121 NO.2-64(2.184) 1.85 1.912 1.756
M4.0*0.5 197 2.025
M4.5*0.5 4.00 4.099 3.959 NO.4-48(2.845) 2.40 2.458 2.271
12.210 11.835
14.210 13.835
15.744 15.294
17.744 17.294
19.744 19.294
21.252 20.752
24.252 23.752
规格
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
3.20
W3/16 - 24 3.75
3.70
W1/4 - 20 5.10
5.00
W5/16 - 18 6.60
6.50
W3/8 - 16 8.00
7.90
W7/16 - 14 9.40 W1/2 - 12 10.70 W9/16 - 12 12.30
9.30 10.50 12.00
W5/8 - 11 13.70
美制迫牙丝攻钻孔径
规格
NO. 2-56UNC NO. 3-48 NO. 4-40
精度等级
G1-G6 1.94 2.23 2.50
G7-G8 .. .. ..
NO. 5-40
2.83
..
NO. 6-32
3.07
..
NO. 8-32
3.73
3.77
NO.10-24 NO.12-24 1/4 - 20
4.24 4.90
美制细螺纹
M2.3*0.25 2.05 M2.5*0.35 2.20
2.061 2.221
2.001 规格（UNF）标准径 二级牙钻孔径
2.121
最大 最小
M2.6*0.35 2.20 2.246 2.186 NO.0-80(1.524) 1.25 1.305 1.182
M3.0*0.35 2.70 2.721 2.621 NO.1-72(1.854) 1.55 1.612 1.474
公制细螺 纹
标准径 二级牙钻孔径 最大 最小
11.00 11.153 10.917 11.50 11.520 11.400 12.50 12.676 12.376 13.00 13.153 12.917 13.50 13.676 13.376 14.00 14.153 13.917 14.50 14.676 14.376 15.00 15.153 14.917 15.50 15.676 15.376 16.00 16.153 15.917 16.00 16.210 15.835 16.50 16.675 16.376 17.00 17.153 16.917 18.00 18.210 17.835 18.50 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 23.376 23.00 23.153 22.917 23.00 23.210 22.835 23.50 22.676 23.376 24.00 24.153 23.917 24.50 24.676 24.376 25.00 25.210 24.835 25.50 25.676 25.376 26.00 26.153 25.917 26.00 26.210 25.835 26.50 26.676 26.376 27.00 27.153 26.917 27.00 27.252 26.752 28.00 28.210 27.835
******本表依据二级牙制订
螺 纹 攻 牙 钻 孔 径 和 滚 造 径 对 照 表.
公制粗螺 纹
规格
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 M3.0*0.6 M3.5*0.6 M4.0*0.7 M4.0*0.75 M4.5*0.75 M5.0*0.8 M5.0*0.9 M6.0*1.0 M7.0*1.0 M8.0*1.25 M9.0*1.25 M10*1.5 M11*1.5 M12*1.75 M14*2.0 M16*2.0 M18*2.5 M20*2.5 M22*2.5 M24*3.0 M27*3.0
规格
标准径 二级牙钻孔径 最大 最小
M32*2.0 M32*1.5
30.00 30.210 29.835 30.50 30.676 30.376
M1.0*0.2 0.80 0.821 0.783
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
M6.0*0.5 5.50 5.550 5.400 NO.10-32(4.826 4.10 4.165 3.963
M7.0*0.75 6.30 6.378 6.188 NO.12-28(5.846 4.60 4.724 4.496
SM1/4 - 28 5.721-5.366
SM9/32 - 28 6.508-6.648
SM11/32 - 28 8.092-8.432
M30*3.5 26.50 26.771 26.211
M30*1.5 28.50 28.676 28.376
公制细螺纹
M30*1.0 29.00 29.153 28.917
..
NO. 8-36 NO.10-32 NO.12-29
3.78 4.39 4.99
.. 4.43 5.04
1/4 - 28
5.85
5.90
5/16 - 24
7.36
7.41
3/8 - 24
..
9.00
7/16 - 20 1/2 - 20
..
10.48
..
12.07
G9 .. .. .. .. .. .. .. .. .. .. 8.81 10.30 11.82 .. .. .. .. .. .. .. .. .. .. .. 10.54 12.13
公制迫牙丝攻钻孔径
规格
M1.0*0.25 M1.1*0.25 M1.2*0.25
精度等级
G1-G6 G7-G8 G9
0.86 0.88
..
0.96 0.98
..
1.06 1.08
..
M1.4*0.3
1.24 1.25
..
M1.6*0.35
1.41 1.43
..
M1.7*0.35
1.51 1.53
..
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
M6.0*0.75 5.30 5.378 5.188 NO.8-36(4.166) 3.50 3.606 3.404
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
M35*1.5 33.50 33.676 33.376
M1.6*0.2 1.40 1.421 1.383
M36*3.0 33.00 33.252 32.752
2.75 3.20 3.65
.. .. 3.69
M5.0*0.8
4.56 4.60 4.64