螺纹规格        d

M4

M5

M6

M8

M10

M12

M16

M20

M24

螺距            p

0.7

0.8

1

1.25

1.5

1.75

2

2.5

3

dk

max

8

11

13

16

20

23

29

35

44

min

6

8

10

13

17

20

26

32

41

d2

max

7

9

11

12.5

16.5

19.5

23

29

37.5

min

5.5

7.5

9

10.5

14.5

17.5

21

27

35

H

max

20

26

33

39

51

65

73

90

110

min

18

24

30

36

48

62

70

86

106

h

max

4.6

6.5

8

10

12

14

17

21

25

min

3.2

4

5

6.5

8

10

13

16

20

y

max

1.6

2.3

2.3

2.8

4.4

4.9

6.4

6.9

9.4

min

1.1

1.5

1.5

2

3.6

4.1

5.6

6.1

8.6

k

max

4.6

6.5

8

10

12

14

17

21

25

min

3.2

4

5

6.5

8

10

13

16

20