t2

鉆頭do

t1

L2

t3

D2

N

(≈)

4－40

0.112－40

1d

2.9

3

5.7

2.5

2.2

3.66～4.04

3.2

1.5d

4.3

7.1

3.9

3.6

5.1

2d

5.8

8.6

5.4

5.1

7.2

5－40

0.125－40

1d

3.2

3.4

6

2.8

2.5

4.01～4.39

3.7

1.5d

4.8

7.6

4.3

4.1

5.9

2d

6.4

9.2

6

5.7

8.2

6－32

0.138－32

1d

3.5

3.7

7.1

3.1

2.7

4.52～4.90

2.8

1.5d

5.3

8.8

4.9

4.5

4.8

2d

7.0

10.6

6.6

6.2

6.8

8－32

0.164－32

1d

4.2

4.4

7.7

3.8

3.4

5.20～5.56

4.0

1.5d

6.25

9.8

5.9

5.5

6.0

2d

8.3

11.9

8

7.5

8.7

10－24

0.190－24

1d

4.8

5.1

9.6

4.3

3.8

6.19～6.58

3.3

1.5d

7.2

12

6.7

6.2

5.4

2d

9.6

14.4

9.1

8.6

7.5

12－24

0.216－24

1d

5.5

5.8

10.3

5

4.4

6.86～7.24

4.0

1.5d

8.2

13

7.7

7.1

6.3

2d

11.0

15.7

10.5

9.9

8.8

1/4”－20

1d

6.4

6.7

12.1

5.8

5.1

7.86～8.38

3.9

1.5d

9.5

15.2

8.9

8.2

6.2

2d

12.7

18.4

12.1

11.4

8.6

3/8”－16

1d

9.5

9.9

16.7

8.7

7.9

11.48～11.99

4.8

1.5d

14.3

21.4

13.5

12.7

7.7

2d

19.1

26.2

18.3

17.5

10.6

7/16”－14

1d

11.1

11.6

19.3

10.2

9.3

13.36～13.99

4.9

1.5d

16.7

24.8

15.8

14.9

7.9

2d

22.2

30.4

21.3

20.4

10.7

1/2”－13

1d

12.7

13.1

21.5

11.7

10.7

15.16～15.80

5.2

1.5d

19.1

27.8

18.1

17.1

8.3

2d

25.4

34.2

12.4

23.4

11.4

5/8”－11

1d

15.9

16.4

26.3

14.7

13.6

18.84～19.48

5.7

1.5d

23.8

34.2

22.6

21.5

9.0

2d

31.8

42.1

30.6

29.4

12.3

3/4”－10

1d

19.1

19.6

30.5

17.8

16.5

22.36～23.00

6.3

1.5d

28.6

40

27.3

26

9.9

2d

38.1

49.5

36.8

35.5

13.5

1”－8

1d

25.4

26.1

39.7

23.8

22.2

29.62～30.38

6.8

1.5d

38.1

52.4

36.5

34.9

10.6

2d

50.8

65.1

49.2

47.6

14.5