Bolts Hex Flange DIN6921 Class 8.8 Carbon Steel 10B21 Black

Thread Size

M5

M6

M8

M10

M12

M14

M16

M20

P

(Coarse thread)

0.8

1

1.25

1.5

1.75

2

2

2.5

P

(Fine thread-1)

/

/

1

1.25

1.5

1.5

1.5

1.5

P

(Fine thread-2)

/

/

/

1

1.25

/

/

/

b(L≤125)

16

18

22

26

30

34

38

46

b(125＜L≤200)

/

/

28

32

36

40

44

52

b(L＞200)

/

/

/

/

/

/

57

65

c (min)

1

1.1

1.2

1.5

1.8

2.1

2.4

3

da-A (max)

5.7

6.8

9.2

11.2

13.7

15.7

17.7

22.4

da-B (max)

6.2

7.4

10

12.6

15.2

17.7

20.7

25.7

dc (max)

11.8

14.2

18

22.3

26.6

30.5

35

43

ds (max)

5

6

8

10

12

14

16

20

ds (min)

4.82

5.82

7.78

9.78

11.73

13.73

15.73

19.67

du (max)

5.5

6.6

9

11

13.5

15.5

17.5

22

dw (min)

9.8

12.2

15.8

19.6

23.8

27.6

31.9

39.9

e (min)

8.71

10.95

14.26

16.5

17.62

19.86

23.15

29.87

f (max)

1.4

2

2

2

3

3

3

4

k (max)

5.4

6.6

8.1

9.2

11.5

12.8

14.4

17.1

k1 (min)

2

2.5

3.2

3.6

4.6

5.1

5.8

6.8

r1 (min)

0.25

0.4

0.4

0.4

0.6

0.6

0.6

0.8

 r2 (max)

0.3

0.4

0.5

0.6

0.7

0.9

1

1.2

r3 (min)

0.1

0.1

0.15

0.2

0.25

0.3

0.35

0.4

r4

3

3.4

4.3

4.3

6.4

6.4

6.4

8.5

s max=

nominal size

8

10

13

15

16

18

21

27

s(min)

7.78

9.78

12.73

14.73

15.73

17.73

20.67

26.67

t (max)

0.15

0.2

0.25

0.3

0.35

0.45

0.5

0.65

t (min)

0.05

0.05

0.1

0.15

0.15

0.2

0.25

0.3