螺纹规格 D

M12

M14

M16

M18

M20

M22

M24

M27

螺距

粗牙

1.75

2

2

2.5

2.5

2.5

3

3

细牙

1.25

1.5

1.5

1.5

1.5

1.5

1.5

2

S

18

21

24

27

30

34

36

41

dc

23

25.5

29

33

36

41

43

49

c

2.1

3.0

3.4

4.2

4.2

4.2

5.3

5.3

m

12

14

16

18

20

22

24

27

螺纹规格 D

M30

M33

M36

M39

M42

M48

螺距

粗牙

3.5

3.5

4

4

4.5

5

细牙

2

2

3

3

3

3

S

46

50

55

60

65

75

dc

55.5

59.5

65.5

72

77

88

c

6.4

7

7.5

8

8.5

10

m

30

33

36

39

42

48