异形螺纹攻牙钻孔对照表（公制粗螺纹攻牙钻孔对照表）

公制粗螺纹

规格

标准径

2级牙钻孔径

最大

最小

M1.0×0.25

0.75

0.785

0.729

M1.1×0.25

0.85

0.885

0.829

M1.2×0.25

0.95

0.985

0.985

M1.4×0.3

1.10

1.142

1.075

M1.6×0.35

1.25

1.321

1.221

M1.7×0.35

1.35

1.421

1.321

M1.8×0.35

1.45

1.521

1.421

M2.0×0.4

1.60

1.679

1.567

M2.2×0.45

1.75

1.838

1.713

M2.3×0.4

1.90

1.979

1.867

M2.5×0.45

2.10

2.138

2.013

M2.6×0.45

2.20

2.238

2.113

M3.0×0.5

2.50

2.599

2.459

M3.0×0.6

2.40

2.440

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

3.326

3.106

M4.5×0.75

3.80

3.878

3.688

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

6.912

6.647

M9.0×1.25

7.80

7.912

7.647

M10×1.5

8.50

8.676

8.376

M11×1.5

9.50

9.676

9.376

M12×1.75

10.30

10.441

10.106

M14×2.0

12.00

12.210

11.835

M16×2.0

14.00

14.210

13.835

M18×2.5

15.50

15.744

15.294

M20×2.5

17.50

17.744

17.294

M22×2.5

19.50

19.744

19.294

M24×3.0

21.00

21.252

20.752

M27×3.0

24.00

24.252

23.752

M30×3.5

26.50

26.771

26.211