英制粗牙 BSW Machine Screw class2 (55°)   (mm)

 规格

牙数

外径

中径

材料径

基准

最大

最小

基准

最大

最小

最大

最小

1/8

40

3.175

3.155

3.045

2.768

2.738

2.664

2.723

2.686

3/16

24

4.762

4.742

4.592

4.084

4.054

3.965

4.049

4.004

1/4

20

6.350

6.330

6.160

5.537

5.507

5.408

5.501

5.452

5/16

18

7.938

7.910

7.720

7.034

7.000

6.894

6.992

6.939

3/8

16

9.525

9.501

9.310

8.508

8.473

8.359

8.464

8.407

7/16

14

11.112

11.082

11.892

9.950

9.914

9.792

9.907

9.846

1/2

12

12.700

12.670

12.460

11.345

11.306

11.173

11.303

11.237

9/16

12

14.287

14.258

14.047

12.932

12.890

12.756

12.882

12.815

5/8

11

15.875

15.848

15.605

14.396

14.354

14.211

14.347

14.275

11/16

11

17.462

17.435

17.198

15.983

15.941

15.794

15.928

15.855

3/4

10

19.050

19.020

18.780

17.424

17.379

17.226

17.369

17.293

7/8

9

22.225

22.195

21.935

20.418

20.419

20.257

20.410

20.329

1

8

25.400

25.370

25.110

23.367

23.368

23.195

23.362

23.276