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NFE25511


 

 

This document specifies the dimensions and characteristics of steel threaded conical washers with a nominal diameter

ranging from 3 mm to 20 mm, and defines the tests to be conducted as well as their designation method. Threaded

conical washers are intended for use in static conditions within threaded fasteners (suitable for bolts of grade 6.8 or

8.8 and their corresponding nuts).

International Technical Thesaurus: fastener, conical washer, steel, characteristic, dimension, dimensional tolerance,

assembly, proof load, torque, metal screw, nut, aspect, receiving inspection, test, hardness test, compression test,

rupture, data sheet, diameter, specification, coating, brittleness, designation, symbol, thickness. 

 


Size

 

part no.

Type

For screws with

metric thread

d (mm)

D (mm)

S (mm)

   h (mm)

Teeth

Nr.

Kg/

1000pcs

Nomin.

Max

Nom

Min

Max

Nomin.

Min

Max

Min

Max

CNBLW25511ZM3

Z

M3

3.1

3.35

6

6.24

5.76

0.5

0.47

0.53

0.7

0.9

28

0.08

CNBLW25511MM3

M

3.1

3.35

8

8.29

7.71

0.6

0.57

0.63

0.8

1

28

0.2

CNBLW25511LM3

L

3.1

3.35

10

10.29

9.71

0.6

0.57

0.63

0.95

1.2

28

0.33

CNBLW25511ZM4

Z

M4

4.1

4.4

8

8.29

7.71

0.8

0.77

0.83

1

1.2

32

0.23

CNBLW25511MM4

M

4.1

4.4

10

10.29

9.71

0.9

0.86

0.94

1.15

1.4

32

0.46

CNBLW25511LM4

L

4.1

4.4

14

14.35

13.65

1

0.96

1.04

1.4

1.8

32

1.1

CNBLW25511ZM5

Z

M5

5.1

5.4

10

10.29

9.71

1

0.96

1.04

1.25

1.5

36

0.46

CNBLW25511MM5

M

5.1

5.4

12

12.35

11.65

1.1

1.06

1.14

1.45

1.8

36

0.8

CNBLW25511LM5

L

5.1

5.4

16

16.35

15.65

1.2

1.16

1.24

1.7

2.1

36

1.7

CNBLW25511ZM6

Z

M6

6.1

6.4

12

12.35

11.65

1.2

1.16

1.24

1.55

1.85

45

0.79

CNBLW25511MM6

M

6.1

6.4

14

14.35

13.65

1.3

1.26

1.34

1.75

2.1

45

1.27

CNBLW25511LM6

L

6.1

6.4

18

18.35

17.65

1.4

1.36

1.44

2.1

2.5

45

2.48

CNBLW25511ZM8

Z

M8

8.2

8.56

16

16.35

15.65

1.4

1.36

1.44

1.8

2.2

45

1.63

CNBLW25511MM8

M

8.2

8.56

18

18.35

17.65

1.4

1.36

1.44

1.9

2.35

45

2.22

CNBLW25511LM8

L

8.2

8.56

22

22.42

21.58

1.6

1.55

1.65

2.2

2.7

45

4.11

CNBLW25511ZM10

Z

M10

10.2

10.56

20

20.42

19.58

1.6

1.55

1.65

2.1

2.6

45

0.29

CNBLW25511MM10

M

10.2

10.56

22

22.42

21.58

1.6

1.55

1.65

2.25

2.75

45

3.75

CNBLW25511LM10

L

10.2

10.56

27

27.42

26.58

1.8

1.75

1.85

2.6

3.1

45

0.69

CNBLW25511ZM12

Z

M12

12.4

12.83

24

24.42

23.58

1.8

1.75

1.85

2.4

2.9

45

4.69

CNBLW25511MM12

M

12.4

12.83

27

27.42

26.58

1.8

1.75

1.85

2.6

3.1

45

6.34

CNBLW25511LM12

L

12.4

12.83

32

32.5

31.5

2

1.95

2.05

3.1

3.6

45

10.65

CNBLW25511MM14

M

M14

14.4

14.83

30

30.42

29.58

2.4

2.34

2.46

3.2

3.7

45

10.18

CNBLW25511MM16

M

M16

16.4

16.83

32

32.5

31.5

2.8

2.74

2.86

3.6

4.1

60

12.95

CNBLW25511MM20

M

M20

20.5

21.02

40

40.5

39.5

3.2

3.14

3.26

4.3

4.9

60

23.12

 

 

 


 

 

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.
 
 
 
 
 

 

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