DIN Fastener:

d1

for screw size

d2

s

h min

h max

2.1

M2

4.4

0.5

0.7

0.9

2.6

M2.5

5.1

0.6

0.9

1.1

3.1

M3

6.2

0.7

1.1

1.3

3.6

M3.5

6.7

0.7

1.1

1.3

4.1

M4

7.6

0.8

1.2

1.4

5.1

M5

9.2

1

1.5

1.7

6.1

M6

11.8

1.3

2

2.2

8.1

M8

14.8

1.6

2.45

2.75

10.2

M10

18.1

1.8

2.85

3.15

12.2

M12

21.1

2.1

3.35

3.65

14.2

M14

24.1

2.4

3.9

4.3

16.2

M16

27.4

2.8

4.5

5.1

18.2

M17

29.4

2.8

4.5

5.1

20.2

M20

33.6

3.2

5.1

5.9

22.2

M21

35.9

3.2

5.1

5.9

24.5

M24

40

4

6.5

7.5

30.5

M30

48.2

6

9.5

10.5