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DIN 7967:1970 Lock Nut

DIN 7967:1970 Locking Nut is a thin locking component used to provide additional retention after a threaded connection is assembled. Its compact structure can offer auxiliary holding force within limited space and is often used together with standard nuts or specific threaded parts.

This product can be applied in mechanical maintenance, light equipment, instrument brackets, adjustment mechanisms, and auxiliary anti-loosening connections. The compact form is useful where installation height and component weight must be controlled.

Suitable materials and surface treatments can be selected according to thread compatibility and environmental conditions to meet general rust protection and repeated assembly needs.

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Dimensions unit: mm 

Thread size d

M4

M5

M6

M8

M10

M12

M14

M16

M18

M20

M22

P

Series 1

0.7

0.8

1

1.25

1.5

1.75

2

2

2.5

2.5

2.5

Series 2

-

-

-

1

1.25

1.5

1.5

1.5

2

2

2

Series 3

-

-

-

-

1

1.25

-

-

1.5

1.5

1.5

d

Series 1

3.5

4.5

5.3

6.9

8.6

10.4

12

14.1

15.5

17.6

19.6

Series 2

-

-

-

7.1

9

10.7

12.7

14.8

16.2

18.3

20.3

Series 3

-

-

-

-

9.3

11

-

-

16.8

18.8

20.8

e

≈

8.1

9.2

11.5

15

19.6

21.9

25.4

27.7

31.2

34.6

36.9

m

2.5

2.5

3

3.5

4

4.5

5

5

5.5

6

6

s

Max.=Nominal (h13)

7

8

10

13

17

19

22

24

27

30

32

Min.

6.78

7.78

9.78

12.73

16.73

18.67

21.67

23.67

26.67

29.67

31.61

t

Series 1

0.3

0.4

0.4

0.5

0.5

0.6

0.6

0.7

0.7

0.8

0.8

Series 2

-

-

-

0.4

0.5

0.6

0.6

0.7

0.7

0.8

0.8

Series 3

-

-

-

-

0.5

0.6

-

-

0.7

0.7

0.7

 Weight per thousand pieces kg 

Series 1

0.17

0.28

0.4

0.9

1.4

1.9

2.5

3.4

4.1

5.8

6.4

Series 2

-

-

-

0.7

1.4

1.9

2.5

3.4

4.1

5.8

6.4

Series 3

-

-

-

-

1.4

1.9

-

-

4.1

5.1

5.6

  

Thread size d

M24

M27

M30

M33

M36

M39

M42

M45

M48

M52

P

Series 1

3

3

3.5

3.5

4

4

4.5

4.5

5

5

Series 2

2

2

2

2

3

3

3

3

3

3

Series 3

1.5

-

-

-

-

-

-

-

-

-

d

Series 1

21

24.2

26.6

29.8

32.2

35.2

37.6

40.9

43.9

48.2

Series 2

22.5

25.5

28.5

31.5

33.6

36.6

39.8

42.8

45.8

49.8

Series 3

22.8

-

-

-

-

-

-

-

-

-

e

≈

41.6

47.3

53.1

57.7

63.5

69.3

75

80.8

86.5

92.4

m

7

7

8

8

9

9

11

12

14

16

s

Max.=Nominal (h13)

36

41

46

50

55

60

65

70

75

80

Min.

35.61

40.61

45.61

49.61

54.54

59.54

64.54

69.54

74.54

79.54

t

Series 1

0.9

1

1.1

1.2

1.3

1.3

1.4

1.5

1.6

1.7

Series 2

0.9

1

1

1

1.3

1.3

1.4

1.5

1.5

1.5

Series 3

0.7

-

-

-

-

-

-

-

-

-

 Weight per thousand pieces kg 

Series 1

9.5

13

17.5

22

29

32

45

64

80

95

Series 2

9.5

13

16

18.5

29

32

45

64

75

80

Series 3

7.4

-

-

-

-

-

-

-

-

-

 

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