英制规格

转换为公制规格

公制规格

公称长度

自由状态圈数

钻头直径

自由状态外径

kXd

mm

N

mm

mm

1/4-26

6.35X0.977

1d

6.4

4.8

6.7

7.65~8.00

1.5d

9.5

7.9

2d

12.7

10.8

5/16-22

7.94X1.156

1d

7.9

5.2

8.2

9.45~9.70

1.5d

11.9

8.4

2d

15.9

11.6

3/8-20

9.525X1.270

1d

9.5

5.9

9.8

11.10~11.60

1.5d

14.3

9.4

2d

19.1

13.0

7/16-18

11.113X1.411

1d

11.1

6.2

11.5

12.90~13.30

1.5d

16.7

9.9

2d

22.2

13.7

1/2-16

12.700X1.588

1d

12.7

6.4

13.1

14.50~14.90

1.5d

19.1

10.2

2d

25.4

13.9

9/16-16

14.288X1.588

1d

14.3

7.3

14.7

16.40~16.90

1.5d

21.5

11.6

2d

28.6

15.7

5/8-14

15.875X1.814

1d

15.9

7.1

16.3

18.2~18.60

1.5d

23.8

11.3

2d

31.80

15.5

3/4-12

19.050X2.117

1d

19.1

7.4

19.5

21.60~22.10

1.5d

28.6

11.7

2d

38.1

16.0

7/8-11

22.225X2.309

1d

22.2

8.0

22.7

25.00~25.60

1.5d

33.3

12.5

2d

44.5

17.2