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@螺纹攻牙钻孔径和滚造径对照表

优胜模具培训学校2022-07-31 15:47:10

螺纹攻牙钻孔径和滚造径对照表
本表所推选钻头孔径,是针对攻牙加工时,能够很容易的了解钻头直径;而依据市售之标准钻头所选定的.在使用钻头的情况下,由于钻头的形状及尺寸,精度,被钻孔之材质等,对于所钻孔的尺寸,精度有很大影响,所以使用本表之钻孔径,若有不当之处,应实际状况适当的变更钻头直径,本表依据2级牙制订.


公制

规格标准径 2级牙钻孔径

最大最小

M1.0×0.25 0.75 0.7850.729

M1.1×0.25 0.85 0.8850.829

M1.2×0.25 0.95 0.9850.929

M1.4×0.3 1.10 1.142 1.075

M1.6×0.35 1.25 1.3211.221

M1.7×0.35 1.35 1.4211.321

M1.8×0.35 1.45 1.5211.421

M2.0×0.4 1.60 1.679 1.567

M2.2×0.45 1.75 1.8381.713

M2.3×0.4 1.90 1.979 1.867

M2.5×0.45 2.10 2.1382.013

M2.6×0.45 2.20 2.2382.113

M3.0×0.5 2.50 2.599 2.459

M3.0×0.6 2.40 2.44 2.280

M3.5×0.6 2.90 3.010 2.850

M4.0×0.7 3.30 3.422 3.242

M4.0×0.75 3.25 3.3263.106

M4.5×0.75 3.80 3.8783.688

M5.0×0.8 4.20 4.334 4.134

M5.0×0.9 4.10 4.170 3.930

M6.0×1.0 5.00 5.153 4.917

M7.0×1.0 6.00 6.153 5.917

M8.0×1.25 6.80 6.9126.647

M9.0×1.25 7.80 7.9127.647

M10×1.5 8.50 8.676 8.376

M11×1.5 9.50 9.676 9.376

M12×1.75 10.30 10.44110.106

M14×2.0 12.00 12.21011.735

M16×2.0 14.00 14.21013.835

M18×2.5 15.50 15.74415.294

M20×2.5 17.50 17.74417.294

M22×2.5 19.50 19.74419.294

M24×3.0 21.00 21.2522.752

M27×3.0 24.00 24.25223.752

M30×3.5 26.50 26.77126.211


公制

规格标准径 2级牙钻孔径

最大最小

M1.0×0.2 0.80 0.821 0.783

M1.1×0.2 0.90 0.921 0.883

M1.2×0.2 1.00 1.021 0.983

M1.4×0.2 1.20 1.221 0.183

M1.6×0.2 1.40 1.421 1.383

M1.7×0.2 1.45 1.500 1.460

M1.8×0.2 1.60 1.621 1.583

M2.0×0.25 1.75 1.7851.729

M2.2×0.25 1.95 1.9851.929

M2.3×0.25 2.05 2.0612.001

M2.5×0.35 2.20 2.2212.121

M2.6×0.35 2.20 2.2462.186

M3.0×0.35 2.70 2.7212.621

M3.5×0.35 3.20 3.2213.121

M4.0×0.5 3.50 3.599 3.459

M4.5×0.5 4.00 4.099 3.959

M5×0.5 4.50 4.599 4.459

M5.5×0.5 5.00 5.099 4.959

M6.0×0.75 5.30 5.378 5.188

M6.0×0.5 5.50 5.550 5.400

M7.0×0.75 6.30 6.37861.88

M7.0×0.5 6.50 6.550 64.00

M8.0×1.0 7.00 7.153 6.917

M8.0×0.75 7.30 7.3787.188

M8×0.5 7.50 7.520 7.400

M9×1.0 8.00 8.153 7.917

M9×0.75 8.30 8.3788.188

M10×1.25 8.80 8.9128.647

M10×1.0 9.00 9.153 8.917

M10×0.75 9.30 9.3789.188

M10×0.5 9.50 9.520 9.400

M11×1.0 10.00 10.1539.917

M11×0.75 10.30 10.37810.188

M11×1.5 10.50 10.67610.376

M12×1.25 10.80 10.91210.647


公制

规格标准径 2级牙钻孔径

最大最小

M12×1.0 11.00 11.15310.917

M12×0.5 11.50 11.52011.4

M14×1.5 12.50 12.67612.376

M14×1.0 13.00 13.15312.917

M15×1.5 13.50 13.67613.376

M15×1.0 14.00 14.15313.917

M16×1.5 14.50 14.67614.376

M16×1.0 15.00 15.15314.917

M17×1.5 15.50 15.67615.376

M17×1.0 16.00 16.15315.917

M18×2.0 16.00 16.21015.835

M18×1.5 16.50 16.67016.376

M18×1.0 17.00 17.15316.917

M20×2.0 18.00 18.21017.835

M20×1.5 18.50 18.67618.376

M20×1.0 19.00 19.15318.917

M20×2.0 20.00 20.21019.835

M22×1.5 20.50 20.67620.376

M22×1.0 21.00 21.153 20.917

M24×2.0 22.00 22.21021.835

M24×1.5 22.50 22.67622.376

M24×1.0 23.00 23.15322.917

M25×2.0 23.00 23.21022.835

M25×1.5 23.50 23.67623.376

M25×1.0 24.00 24.15323.917

M26×1.5 24.50 24.67624.376

M27×2.0 25.00 25.21024.835

M27×1.5 25.50 25.67625.376

M27×1.0 26.00 26.15325.917

M28×2.0 26.00 26.21025.835

M28×1.5 26.50 26.67626.376

M28×1.0 27.00 27.15326.917

M30×3.0 27.00 27.25226.752

M30×2.0 28.00 28.21027.835

M30×1.5 28.50 28.67628.376

M30×1.0 29.00 29.15328.917

M32×2.0 30.00 30.21029.835

M32×1.5 30.50 30.67630.376

M33×3.0 30.00 30.25229.752

M33×2.0 31.00 31.21030.835

M33×1.5 31.50 31.37631.376

M35×1.5 33.50 33.67633.376

M36×3.0 33.00 33.25232.752

M36×2.0 34.00 34.21033.835

M36×1.5 34.50 34.67634.376


美制

规格(UNF) 标准径 2级牙钻孔径

最大最小

番数牙外径

NO.0-80(1.524) 1.25 1.305 1.182

NO.1-72(1.854) 1.55 1.612 1.474

NO.2-64(2.184) 1.85 1.912 1.756

NO.3-56(2.515) 2.10 2.197 2.025

NO.4-48(2.845) 2.40 2.458 2.271

NO.5-44(3.175) 2.70 2.740 2.551

NO.6-40(3.505) 2.90 3.022 2.820

NO.8-36(4.166) 3.50 3.606 3.404

NO.10-32(4.826) 4.10 4.165 3.963

NO.12-28(5.846) 4.60 4.724 4.496

1/4 -28 5.50 5.588 5.360

5/16 -24 6.90 7.035 6.782

3/8 -24 8.50 8.636 8.382

7/16 -20 9.90 10.033 9.729

1/2 -20 11.50 11.607 11.329

9/16 -18 12.90 13.081 12.751

5/8 -18 14.50 14.681 14.351

3/4 -16 17.50 14.678 17.323

7/8 -14 20.50 20.675 20.270

1 -12 23.20 23.571 23.114

1-1/8 -12 26.50 26.746 26.289

1-1/4 -12 29.50 29.921 29.464

1-3/8 -12 32.80 33.096 32.464

1-1/2 -12 36.00 36.270 35.814


无屑

规格精度等级

RH4.5.6 RH7.8 RH9

M1.0×0.25 0.86 0.88 -

M1.1×0.25 0.96 0.98 -

M1.2×0.25 1.06 1.08 -

M1.4×0.3 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 -

M2.0×0.4 1.78 1.80 -

M2.2×0.45 1.95 1.98 -

M2.3×0.4 2.08 2.10 -

M2.5×0.45 2.25 2.28 -

M2.6×0.45 2.35 1.38 -

M3.0×0.5 2.73 2.75 -

M3.0×0.6 3.17 3.20 -

M4.0×0.7 3.62 3.65 3.69

M5.0×0.8 4.56 4.60 4.64

M6.0×1.0 5.45 5.50 5.55

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 11.1211.21

M12×1.25 11.31 11.3811.44

:无槽丝攻之钻孔径,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,因此参考上表之同时,亦请增减若干.


美制

规格(UNEF) 标准径 2级牙钻孔径

最大最小

NO.12 -32 4.70 4.826 4.623

1/4 -32 5.60 5.690 5.486

5/16 -32 7.10 7.264 7.087

3/8 -32 8.70 8.865 8.661

7/16 -28 10.20 10.338 10.135

1/2 -28 11.80 11.938 11.709

9/16 -28 13.20 13.386 13.132

5/8 -24 14.80 14.986 14.732

3/4 -20 17.80 17.958 17.678

7/8 -20 21.00 21.133 20.853

1 -20 24.00 24.308 24.028


美制

规格(UNC) 标准径 2级牙钻孔径

番数牙外径最大 最小

NO.1-64(1.854) 1.55 1.582 1.425

NO.2-56(2.184) 1.80 1.871 1.695

NO.3-48(2.515) 2.10 2.146 1.941

NO.4-40(2.845) 2.30 2.385 2.157

NO.5-40(3.175) 2.60 2.697 2.487

NO.6-32(3.505) 2.80 2.895 2.642

NO.8-32(4.166) 3.40 3.530 3.302

NO.10-24(4.826) 3.90 3.962 3.682

NO.12-24(5.846) 4.50 4.597 4.344

1/4 -20 5.10 5.257 4.979

5/16 -18 6.60 6.731 6.401

3/8 -16 8.00 8.153 7.987

7/16 -14 9.40 9.500 9.144

1/2 -13 10.80 11.023 10.592

9/16 -12 12.20 12.446 11.989

5/8 -11 13.60 12.868 13.386

3/4 -10 16.20 16.840 16.307

7/8 -9 19.50 19.761 19.177

1 -8 22.20 22.606 21.971

1-1/8 -7 25.00 25.349 24.638

1-1/4 -7 28.20 28.524 27.813

1-3/8 -6 30.80 31.115 30.353

1-1/2 -6 34.00 34.290 33.528

1-3/4 -5 39.50 39.827 38.964

2 -4-1/2 45.20 45.593 44.679


英制 螺 纹

规格钻孔径

硬材软材

W1/8 - 40 2.65 2.60

W5/32 - 32 3.25 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 9.30

W1/2 - 12 10.70 10.50

W9/16 - 12 12.30 12.00

W5/8 - 11 13.70 13.50

W3/4 - 10 16.70 16.50

W7/8 - 9 19.50 19.30

W1 - 8 22.40 22.00

W1-1/8 - 7 25.00 24.80

W1-1/4 - 7 28.30 28.00


英制 管 螺 纹

规格标准径 钻 孔 径

最大最小

PS1/16 -28 6.50 6.632 6.490

PS1/8 -28 8.50 8.637 8.495

PS1/4 - 19 11.40 11.549 11.341

PS3/8 - 19 15.00 15.054 14.846

PS1/2 - 14 18.50 18.773 18.489

PS3/4 - 14 24.00 24.259 23.975

PS1 - 11 30.20 30.471 30.111

PS1-1/4 -11 38.80 39.132 38.772

PS1-1/2 -11 44.80 45.025 44.665

PS2 - 11 56.50 56.836 56.476


英制 管 螺 纹

规格标准径 有效牙部之长度(最小)中之母螺牙内径 标准长度(最小)中之母螺牙内径

使用绞刀时不用绞刀时

PT1/16 -28 6.10 6.2 6.244 6.384

PT1/8 -28 8.10 8.2 8.249 8.388

PT1/4 -19 10.70 11 10.962 11.174

PT3/8 -19 14.20 14.5 14.448 14.658

PT1/2 -14 17.60 18 17.979 18.263

PT3/4 -14 23.00 23.5 23.378 23.663

Pt1 -11 29.00 29.5 29.459 29.822

PT1-1/4 -11 37.50 38 37.976 38.339

PT1-1/2 -11 43.40 44 43.869 44.232

Pt2 -11 54.90 55.5 55.412 55.844


美制 螺 纹 滚 造 径

规格钻孔径

NPT NPS

使用绞刀时不用绞刀时

1/16 -27 6.1 6.25 6.35

1/8 -27 8.33 8.43 8.74

1/4 -18 10.72 11.13 11.13

3/8 -18 14.27 14.27 14.68

1/2 -14 17.48 17.86 18.26

3/4 -14 22.63 23.01 23.42

1 -11-1/2 28.58 28.98 29.36

1-1/4-11-1/2 37.31 37.69 38.1

1-1/2-11-1/2 43.66 44.04 44.45

2 -11-1/2 55.58 55.96 56.36


英制 螺 纹 滚 造 径

规格滚造径

W 3/16 - 24 4.08 - 4.05

W 1/4 - 20 5.51 - 5.46

W 5/16 - 18 7.01 - 6.95

W 3/8 - 16 8.48 - 8.41

W 7/16 - 14 9.92 - 9.85

W 1/2 - 12 11.31 - 11.24

W 9/16 -12 12.89 - 12.82


公制 螺 纹

规格滚造径

M3.0×0.5 2.63 2.60

M3.0×0.6 2.56 2.53

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

M5.0×0.9 4.36 4.31

M6.0×1.0 5.30 5.25

M7.0×1.0 6.30 6.25

M8.0×1.0 7.28 - 7.23

M8.0×1.25 7.12 - 7.07

M9.0×1.25 8.12 - 8.07

M10×1.25 9.10 - 9.04

M10×1.5 8.97 - 8.91

M11×1.5 9.97 - 9.91

M12×1.5 10.92 - 10.87

M12×1.75 10.79 - 10.73

M14×2.0 12.63 - 12.56

M16×2.0 14.63 - 14.56

M18×2.5 16.31 - 16.23

M20×2.5 18.31 - 18.23

M22×2.5 20.31 - 20.23


针车 用 螺 纹

规格(UNC) 滚造径

SM 1/8 40 2.735 -2.688

SM 1/8 44 2.769 -2.722

SM 9/64 40 3.128 -3.083

SM 11/64 40 3.855 -3.805

SM 3/16 32 4.205 -4.155

SM 3/16 28 4.143 -4.093

SM 7/32 32 5.003 -4.955

SM 15/64 28 5.325 -4.955

SM 1/4 40 5.890 -5.735

SM 1/4 28 5.721 -5.366

SM 9/32 28 6.528 -6.648

SM 11/32 28 8.092 -8.432

SM 3/8 29 8.880 -8.015

SM 7/16 30 10.466 -10.401

SM 7/16 16 10.037 -9.967

SM 1/2 20 11.819 -11.749

SM 9/16 20 13.400 -13.425


美制 粗 螺 纹

规格(UNC) 滚造径

NO.5-40 2.70 - 2.67

NO.6-32 2.95 - 2.91

NO.8-32 3.60 - 3.57

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 -13 11.39 - 11.32

9/16 -12 12.87 - 12.80


美制 细 螺 纹

规格(UNF) 滚造径

NO.5-44 2.73 - 2.70

NO.6-40 3.05 - 3.02

NO.8-36 3.66 - 3.63

NO.10-32 4.26 - 4.80

NO.12-28 4.84 - 4.80

1/4 -28 5.72 - 5.68

5/16 -24 7.20 - 7.16

3/8 -24 8.79 - 8.74

7/16 -20 10.23 - 10.18

1/2 -20 11.82 - 11.76

本表所推选钻头孔径,是针对攻牙加工时,能够很容易的了解钻头直径;

而依据市售之标准钻头所选定的.在使用钻头的情况下,由于钻头的形状及尺寸,精度,被钻孔之材质等,对于所钻孔的尺寸,精度有很大影响,所以使用本表之钻

孔径,若有不当之处,应实际状况适当的变更钻头直径,本表依据2级牙制订.


公制 精 螺 纹

规格标准径 2级牙钻孔径

最大最小

M1.0×0.25 0.75 0.7850.729

M1.1×0.25 0.85 0.8850.829

M1.2×0.25 0.95 0.9850.929

M1.4×0.3 1.10 1.142 1.075

M1.6×0.35 1.25 1.3211.221

M1.7×0.35 1.35 1.4211.321

M1.8×0.35 1.45 1.5211.421

M2.0×0.4 1.60 1.679 1.567

M2.2×0.45 1.75 1.8381.713

M2.3×0.4 1.90 1.979 1.867

M2.5×0.45 2.10 2.1382.013

M2.6×0.45 2.20 2.2382.113

M3.0×0.5 2.50 2.599 2.459

M3.0×0.6 2.40 2.44 2.280

M3.5×0.6 2.90 3.010 2.850

M4.0×0.7 3.30 3.422 3.242

M4.0×0.75 3.25 3.3263.106

M4.5×0.75 3.80 3.8783.688

M5.0×0.8 4.20 4.334 4.134

M5.0×0.9 4.10 4.170 3.930

M6.0×1.0 5.00 5.153 4.917

M7.0×1.0 6.00 6.153 5.917

M8.0×1.25 6.80 6.9126.647

M9.0×1.25 7.80 7.9127.647

M10×1.5 8.50 8.676 8.376

M11×1.5 9.50 9.676 9.376

M12×1.75 10.30 10.44110.106

M14×2.0 12.00 12.21011.735

M16×2.0 14.00 14.21013.835

M18×2.5 15.50 15.74415.294

M20×2.5 17.50 17.74417.294

M22×2.5 19.50 19.74419.294

M24×3.0 21.00 21.2522.752

M27×3.0 24.00 24.25223.752

M30×3.5 26.50 26.77126.211


公制 细 螺 纹

规格标准径 2级牙钻孔径

最大最小

M1.0×0.2 0.80 0.821 0.783

M1.1×0.2 0.90 0.921 0.883

M1.2×0.2 1.00 1.021 0.983

M1.4×0.2 1.20 1.221 0.183

M1.6×0.2 1.40 1.421 1.383

M1.7×0.2 1.45 1.500 1.460

M1.8×0.2 1.60 1.621 1.583

M2.0×0.25 1.75 1.7851.729

M2.2×0.25 1.95 1.9851.929

M2.3×0.25 2.05 2.061 2.001

M2.5×0.35 2.20 2.2212.121

M2.6×0.35 2.20 2.2462.186

M3.0×0.35 2.70 2.7212.621

M3.5×0.35 3.20 3.2213.121

M4.0×0.5 3.50 3.599 3.459

M4.5×0.5 4.00 4.099 3.959

M5×0.5 4.50 4.599 4.459

M5.5×0.5 5.00 5.099 4.959

M6.0×0.75 5.30 5.3785.188

M6.0×0.5 5.50 5.550 5.400

M7.0×0.75 6.30 6.37861.88

M7.0×0.5 6.50 6.550 64.00

M8.0×1.0 7.00 7.153 6.917

M8.0×0.75 7.30 7.3787.188

M8×0.5 7.50 7.520 7.400

M9×1.0 8.00 8.153 7.917

M9×0.75 8.30 8.3788.188

M10×1.25 8.80 8.9128.647

M10×1.0 9.00 9.153 8.917

M10×0.75 9.30 9.3789.188

M10×0.5 9.50 9.520 9.400

M11×1.0 10.00 10.1539.917

M11×0.75 10.30 10.37810.188

M11×1.5 10.50 10.67610.376

M12×1.25 10.80 10.91210.647


公制 细 螺 纹

规格标准径 2级牙钻孔径

最大最小

M12×1.0 11.00 11.15310.917

M12×0.5 11.50 11.52011.4

M14×1.5 12.50 12.67612.376

M14×1.0 13.00 13.15312.917

M15×1.5 13.50 13.67613.376

M15×1.0 14.00 14.15313.917

M16×1.5 14.50 14.67614.376

M16×1.0 15.00 15.15314.917

M17×1.5 15.50 15.67615.376

M17×1.0 16.00 16.15315.917

M18×2.0 16.00 16.21015.835

M18×1.5 16.50 16.67016.376

M18×1.0 17.00 17.15316.917

M20×2.0 18.00 18.21017.835

M20×1.5 18.50 18.67618.376

M20×1.0 19.00 19.15318.917

M20×2.0 20.00 20.21019.835

M22×1.5 20.50 20.67620.376

M22×1.0 21.00 21.15320.917

M24×2.0 22.00 22.21021.835

M24×1.5 22.50 22.67622.376

M24×1.0 23.00 23.15322.917

M25×2.0 23.00 23.21022.835

M25×1.5 23.50 23.67623.376

M25×1.0 24.00 24.15323.917

M26×1.5 24.50 24.67624.376

M27×2.0 25.00 25.21024.835

M27×1.5 25.50 25.67625.376

M27×1.0 26.00 26.15325.917

M28×2.0 26.00 26.21025.835

M28×1.5 26.50 26.67626.376

M28×1.0 27.00 27.15326.917

M30×3.0 27.00 27.25226.752

M30×2.0 28.00 28.21027.835

M30×1.5 28.50 28.67628.376

M30×1.0 29.00 29.15328.917

M32×2.0 30.00 30.210 29.835

M32×1.5 30.50 30.67630.376

M33×3.0 30.00 30.25229.752

M33×2.0 31.00 31.21030.835

M33×1.5 31.50 31.37631.376

M35×1.5 33.50 33.67633.376

M36×3.0 33.00 33.25232.752

M36×2.0 34.00 34.21033.835

M36×1.5 34.50 34.67634.376


美制 细 螺 纹

规格(UNF) 标准径 2级牙钻孔径

最大最小

番数牙外径

NO.0-80(1.524) 1.25 1.305 1.182

NO.1-72(1.854) 1.55 1.612 1.474

NO.2-64(2.184) 1.85 1.912 1.756

NO.3-56(2.515) 2.10 2.197 2.025

NO.4-48(2.845) 2.40 2.458 2.271

NO.5-44(3.175) 2.70 2.740 2.551

NO.6-40(3.505) 2.90 3.022 2.820

NO.8-36(4.166) 3.50 3.606 3.404

NO.10-32(4.826) 4.10 4.165 3.963

NO.12-28(5.846) 4.60 4.724 4.496

1/4 -28 5.50 5.588 5.360

5/16 -24 6.90 7.035 6.782

3/8 -24 8.50 8.636 8.382

7/16 -20 9.90 10.033 9.729

1/2 -20 11.50 11.607 11.329

9/16 -18 12.90 13.081 12.751

5/8 -18 14.50 14.681 14.351

3/4 -16 17.50 14.678 17.323

7/8 -14 20.50 20.675 20.270

1 -12 23.20 23.571 23.114

1-1/8 -12 26.50 26.746 26.289

1-1/4 -12 29.50 29.921 29.464

1-3/8 -12 32.80 33.096 32.464

1-1/2 -12 36.00 36.270 35.814


无屑 丝 攻 钻 孔 径

规格精度等级

RH4.5.6 RH7.8 RH9

M1.0×0.25 0.86 0.88 -

M1.1×0.25 0.96 0.98 -

M1.2×0.25 1.06 1.08 -

M1.4×0.3 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 -

M2.0×0.4 1.78 1.80 -

M2.2×0.45 1.95 1.98 -

M2.3×0.4 2.08 2.10 -

M2.5×0.45 2.25 2.28 -

M2.6×0.45 2.35 1.38 -

M3.0×0.5 2.73 2.75 -

M3.0×0.6 3.17 3.20 -

M4.0×0.7 3.62 3.65 3.69

M5.0×0.8 4.56 4.60 4.64

M6.0×1.0 5.45 5.50 5.55

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 11.1211.21

M12×1.25 11.31 11.3811.44

注:无槽丝攻之钻孔径,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,因此参考上表之同时,亦请增减若干.


美制 管 螺 纹

规格(UNEF) 标准径 2级牙钻孔径

最大最小

NO.12 -32 4.70 4.826 4.623

1/4 -32 5.60 5.690 5.486

5/16 -32 7.10 7.264 7.087

3/8 -32 8.70 8.865 8.661

7/16 -28 10.20 10.338 10.135

1/2 -28 11.80 11.938 11.709

9/16 -28 13.20 13.386 13.132

5/8 -24 14.80 14.986 14.732

3/4 -20 17.80 17.958 17.678

7/8 -20 21.00 21.133 20.853

1 -20 24.00 24.308 24.028


美制 粗 螺 纹

规格(UNC) 标准径 2级牙钻孔径

番数牙外径最大 最小

NO.1-64(1.854) 1.55 1.582 1.425

NO.2-56(2.184) 1.80 1.871 1.695

NO.3-48(2.515) 2.10 2.146 1.941

NO.4-40(2.845) 2.30 2.385 2.157

NO.5-40(3.175) 2.60 2.697 2.487

NO.6-32(3.505) 2.80 2.895 2.642

NO.8-32(4.166) 3.40 3.530 3.302

NO.10-24(4.826) 3.90 3.962 3.682

NO.12-24(5.846) 4.50 4.597 4.344

1/4 -20 5.10 5.257 4.979

5/16 -18 6.60 6.731 6.401

3/8 -16 8.00 8.153 7.987

7/16 -14 9.40 9.500 9.144

1/2 -13 10.80 11.023 10.592

9/16 -12 12.20 12.446 11.989

5/8 -11 13.60 12.868 13.386

3/4 -10 16.20 16.840 16.307

7/8 -9 19.50 19.761 19.177

1 -8 22.20 22.606 21.971

1-1/8 -7 25.00 25.349 24.638

1-1/4 -7 28.20 28.524 27.813

1-3/8 -6 30.80 31.115 30.353

1-1/2 -6 34.00 34.290 33.528

1-3/4 -5 39.50 39.827 38.964

2 -4-1/2 45.20 45.593 44.679


英制 螺 纹

规格钻孔径

硬材软材

W1/8 - 40 2.65 2.60

W5/32 - 32 3.25 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 9.30

W1/2 - 12 10.70 10.50

W9/16 - 12 12.30 12.00

W5/8 - 11 13.70 13.50

W3/4 - 10 16.70 16.50

W7/8 - 9 19.50 19.30

W1 - 8 22.40 22.00

W1-1/8 - 7 25.00 24.80

W1-1/4 - 7 28.30 28.00


英制 管 螺 纹

规格标准径 钻 孔 径

最大最小

PS1/16 -28 6.50 6.632 6.490

PS1/8 -28 8.50 8.637 8.495

PS1/4 - 19 11.40 11.549 11.341

PS3/8 - 19 15.00 15.054 14.846

PS1/2 - 14 18.50 18.773 18.489

PS3/4 - 14 24.00 24.259 23.975

PS1 - 11 30.20 30.471 30.111

PS1-1/4 -11 38.80 39.132 38.772

PS1-1/2 -11 44.80 45.025 44.665

PS2 - 11 56.50 56.836 56.476


英制 管 螺 纹

规格标准径 有效牙部之长度(最小)中之母螺牙内径 标准长度(最小)中之母螺牙内径

使用绞刀时不用绞刀时

PT1/16 -28 6.10 6.2 6.244 6.384

PT1/8 -28 8.10 8.2 8.249 8.388

PT1/4 -19 10.70 11 10.962 11.174

PT3/8 -19 14.20 14.5 14.448 14.658

PT1/2 -14 17.60 18 17.979 18.263

PT3/4 -14 23.00 23.5 23.378 23.663

Pt1 -11 29.00 29.5 29.459 29.822

PT1-1/4 -11 37.50 38 37.976 38.339

PT1-1/2 -11 43.40 44 43.869 44.232

Pt2 -11 54.90 55.5 55.412 55.844


美制 螺 纹 滚 造 径

规格钻孔径

NPT NPS

使用绞刀时不用绞刀时

1/16 -27 6.1 6.25 6.35

1/8 -27 8.33 8.43 8.74

1/4 -18 10.72 11.13 11.13

3/8 -18 14.27 14.27 14.68

1/2 -14 17.48 17.86 18.26

3/4 -14 22.63 23.01 23.42

1 -11-1/2 28.58 28.98 29.36

1-1/4-11-1/2 37.31 37.69 38.1

1-1/2-11-1/2 43.66 44.04 44.45

2 -11-1/2 55.58 55.96 56.36


英制 螺 纹 滚 造 径

规格滚造径

W 3/16 - 24 4.08 - 4.05

W 1/4 - 20 5.51 - 5.46

W 5/16 - 18 7.01 - 6.95

W 3/8 - 16 8.48 - 8.41

W 7/16 - 14 9.92 - 9.85

W 1/2 - 12 11.31 - 11.24

W 9/16 -12 12.89 - 12.82


公制 螺 纹

规格滚造径

M3.0×0.5 2.63 2.60

M3.0×0.6 2.56 2.53

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

M5.0×0.9 4.36 4.31

M6.0×1.0 5.30 5.25

M7.0×1.0 6.30 6.25

M8.0×1.0 7.28 - 7.23

M8.0×1.25 7.12 - 7.07

M9.0×1.25 8.12 - 8.07

M10×1.25 9.10 - 9.04

M10×1.5 8.97 - 8.91

M11×1.5 9.97 - 9.91

M12×1.5 10.92 - 10.87

M12×1.75 10.79 - 10.73

M14×2.0 12.63 - 12.56

M16×2.0 14.63 - 14.56

M18×2.5 16.31 - 16.23

M20×2.5 18.31 - 18.23

M22×2.5 20.31 - 20.23


针车 用 螺 纹

规格(UNC) 滚造径

SM 1/8 40 2.735 -2.688

SM 1/8 44 2.769 -2.722

SM 9/64 40 3.128 -3.083

SM 11/64 40 3.855 -3.805

SM 3/16 32 4.205 -4.155

SM 3/16 28 4.143 -4.093

SM 7/32 32 5.003 -4.955

SM 15/64 28 5.325 -4.955

SM 1/4 40 5.890 -5.735

SM 1/4 28 5.721 -5.366

SM 9/32 28 6.528 -6.648

SM 11/32 28 8.092 -8.432

SM 3/8 29 8.880 -8.015

SM 7/16 30 10.466 -10.401

SM 7/16 16 10.037 -9.967

SM 1/2 20 11.819 -11.749

SM 9/16 20 13.400 -13.425


美制 粗 螺 纹

规格(UNC) 滚造径

NO.5-40 2.70 - 2.67

NO.6-32 2.95 - 2.91

NO.8-32 3.60 - 3.57

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 -13 11.39 - 11.32

9/16 -12 12.87 - 12.80


美制 细 螺 纹

规格(UNF) 滚造径

NO.5-44 2.73 - 2.70

NO.6-40 3.05 - 3.02

NO.8-36 3.66 - 3.63

NO.10-32 4.26 - 4.80

NO.12-28 4.84 - 4.80

1/4 -28 5.72 - 5.68

5/16 -24 7.20 - 7.16

3/8 -24 8.79 - 8.74

7/16 -20 10.23 - 10.18

1/2 -20 11.82 - 11.76

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