英制细牙 BSF Machine Screw class2 (55°)   (mm)

 规格

牙数

外径

中径

材料)

基准

最大

最小

基准

最大

最小

最大

最小

3/16

32

4.762

4.743

4.622

4.254

4.227

4.143

4.209

4.167

7/32

28

5.556

5.536

5.404

4.975

4.948

4.856

4.929

4.883

1/4

26

6.350

6.329

6.186

5.724

5.697

5.603

5.678

5.631

9/32

26

7.144

7.122

6.968

6.518

6.487

6.388

6.464

6.414

5/16

22

7.938

7.915

7.750

7.199

7.168

7.064

7.148

7.096

3/8

20

9.525

9.501

9.325

8.712

8.679

8.567

8.656

8.600

7/16

18

11.112

11.087

10.900

10.208

10.173

10.053

10.149

10.089

1/2

16

12.700

12.674

12.476

11.683

11.646

11.519

11.623

11.559

9/16

16

14.287

14.260

14.059

13.270

13.233

13.101

13.205

13.139

5/8

14

15.875

15.847

15.635

14.713

14.674

14.536

14.649

14.580

11/16

14

17.462

17.433

17.210

16.300

16.259

16.116

16.229

16.158

3/4

12

19.050

19.020

18.786

17.695

17.648

17.498

17.623

17.548

7/8

11

22.225

22.194

21.949

20.746

20.747

20.589

20.721

20.642