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DIN9250 S

 

 

This range of Safety Washers is based on the Disc Spring concept. The washer has the unique feature of radial serrations on both the concave and convex surfaces. When tightened to near capacity these serrations bite into the mating surfaces, thus preventing the loosening of the screw due to vibration and other similar circumstances. The Safety Washer offers a reduced outside diameter compared with a conventional Disc Spring Washer. This corresponds to most screw head sizes and is very compatible with the hexagonal socket type screw.

Safety washers are available in two versions: the standard safety washer type “S” is available for screws of sizes M1.6 to M36 and of the property classes up to 8.8.


Size

 

part no.

Size

d (mm)

D (mm)

h (mm)

   H (mm)

Kg/

1000pcs

M

inch

Nomin.

Nom

Nomin.

Min

Max

CNBLW9250SM1.6

1.6

-

1.7

3.2

0.35

0.4

0.6

0.013

CNBLW9250SM2

2

-

2.2

4

0.35

0.4

0.6

0.021

CNBLW9250SM2.5

2.5

-

2.7

4.8

0.45

0.5

0.9

0.039

CNBLW9250SM3

3

0.125

3.2

5.5

0.45

0.5

0.9

0.049

CNBLW9250SM3.5

3.5

-

3.7

6

0.5

0.55

0.9

0.055

CNBLW9250SM4

4

5/32

4.3

7

0.5

0.55

1

0.085

CNBLW9250SM5

5

0.1875

5.3

9

0.6

0.6

1.1

0.167

CNBLW9250SM6

6

-

6.4

10

0.6

0.7

1.2

0.2

CNBLW9250SM6.35

6.35

0.25

6.7

9.5

0.6

0.65

1.2

0.15

CNBLW9250SM7

7

-

7.4

12

0.7

0.8

1.3

0.355

CNBLW9250SM8

8

0.3125

8.4

13

0.7

0.9

1.4

0.392

CNBLW9250SM10

10

0.375

10.5

16

0.9

1.1

1.6

0.75

CNBLW9250SM11.1

11.1

0.4375

11.6

15.9

0.9

1.05

1.6

0.595

CNBLW9250SM12

12

-

13

18

1

1.15

1.7

0.879

CNBLW9250SM12.7

12.7

 1/2

13.7

19

1

1.25

1.8

0.976

CNBLW9250SM14

14

-

15

22

1.1

1.35

2

1.641

CNBLW9250SM16

16

 5/8

17

24

1.2

1.55

2.1

1.984

CNBLW9250SM18

18

-

19

27

1.4

1.75

2.3

2.97

CNBLW9250SM19

19

 3/4

20

30

1.4

1.9

2.5

4.1

CNBLW9250SM20

20

-

21

30

1.4

1.85

2.5

3.742

CNBLW9250SM22

22

 7/8

23

33

1.4

1.95

2.7

4.507

CNBLW9250SM24

24

-

25.6

36

1.6

2.15

2.9

5.91

CNBLW9250SM25.4

25.4

1

27

38

1.8

2.35

3.1

7.449

CNBLW9250SM27

27

-

28.6

39

1.8

2.35

3.1

7.369

CNBLW9250SM30

30

 1-1/8

31.6

45

1.8

2.6

3.6

10.78

CNBLW9250SM36

36

 1-3/8

38

54

2.5

3.2

4.2

21.28
 

Materials

65MN
S60C
SK5
60Si2Mn
51CrV4

Finish

Zinc Plated
Black
Dacromet
Geomet

Appliction

Used in many industries: energy, transportation, marine, mining ,construction and bridge construction, manufacturing, processing, shipbuilding, forestry and agriculture, heavy vehicles and military.

Advantages

The trapezoidal cross section makes the locking force act on the outer diameter to ensure the maximum resistance to loosening.
Tooth shape design effectively prevents vibration loosening.
Closed circular design produces high pre-tightening force and excellent friction connection.
High load concentricity can avoid bolt bending when tightening.
Smooth tooth edge, avoid scratching bolt surface when locking.

 

Related Products

DIN9250 S

DIN9250 VS

DIN9250 SS

DIN9250 VSS