Call on 01202 339559

Schnorr Load Washers

Have been specially developed for high strength bolts of grades 8.8 to 12.9.

heavy duty load washers 'hds'

The HDS washers have been specifically developed for high-strength bolts in the strength classes 8.8 –10.9 as per DIN ISO 898 Part 1 (SAE Grade 5). The loads of the washers have been matched to these bolts and are 70 to 90% of the bolt load in the flat state. 

These high loads naturally require large cross-sections, which is why the outside diameter of the load washer is considerably larger than that of the Schnorr serrated safety washer. As a result, the area required for a design with load washers cannot be ignored. 

As a highly progressive load increase occurs at the end of the spring deflection when the washer is flattened, the load has been indicated as double the calculated value in the following table. Tests are shown that these values are comparable with the measured values.

The HDS washers contained in the table conform to DIN 6796, Edition October 1987 ‘Conical spring washers for bolted connections’. The test specifications are laid down in DIN 267 Part 26 ‘Fasteners; technical specifications for elements made of spring steel for bolted connections’.

Explanations of the table:

Technical requirements:

According to DIN 267, Part 26

Material grades:

Spring steel according to DIN EN 10132-4, other materials on request

Available surfaces:

Hardened, blank and oiled; mechanically galvanized; other materials on request.

Article No:

Applies to the normal version made of spring steel

h max:

Maximum dimension in delivery condition

h min:

Minimum dimension after setting test according to DIN 267, Part 26

Contact force:

contact forces for the setting test according to DIN 267, Part 26

Minimum residual

spring load:

Spring load, which rests after load with the contact pressure according to DIN 267, Part 2 and subsequent relieving of 100mm

Dimension table for ’HDS’ load washers according to DIN 6796 material C60 S (1.211)

Article

No./

Order

Ref.

Finish

Nominal Size

Ordering Dimensions

Contact

Force

Minimum

residual

spring load

mm

d1

mm

d2

mm

s

mm

hmax

mm

hmin

mm

F

N

F

N

700000

702110

Blank, oiled

Zn12M+passivation

2

2.2

5

0.4

0.5

0.60

*

*

700100

702120

Blank, oiled

Zn12M+passivation

2.5

2.7

6

0.5

0.6

0.72

*

*

700200

702130

Blank, oiled

Zn12M+passivation

3

3.2

7

0.6

0.7

0.85

*

*

700300

702140

Blank, oiled

Zn12M+passivation

3.5

3.7

8

0.8

0.9

1.06

*

*

700400

702150

Blank, oiled

Zn12M+passivation

4

4.3

9

1.0

1.1

1.30

4400

1400

700500

702160

Blank, oiled

Zn12M+passivation

5

5.3

11

1.2

1.3

1.55

7200

2300

700600

702170

Blank, oiled

Zn12M+passivation

6

6.4

14

1.5

1.7

2.00

10200

4200

700700

702180

Blank, oiled

Zn12M+passivation

7

7.4

17

1.75

2.0

2.30

14800

6200

700800

702190

Blank, oiled

Zn12M+passivation

8

8.4

18

2.0

2.2

2.60

18600

7700

700900

702200

Blank, oiled

Zn12M+passivation

10

10.5

23

2.5

2.8

3.20

29600

12400

701000

702210

Blank, oiled

Zn12M+passivation

12

13.0

29

3.0

3.4

3.95

43000

18000

701100

702220

Blank, oiled

Zn12M+passivation

14

15.0

35

3.5

4.0

4.65

59100

25000

701200

702230

Blank, oiled

Zn12M+passivation

16

17.0

39

4.0

4.6

5.25

80900

34000

701300

702240

Blank, oiled

Zn12M+passivation

18

19.0

42

4.5

5.1

5.80

102000

57000

701400

702250

Blank, oiled

Zn12M+passivation

20

21.0

45

5.0

5.6

6.40

130000

73000

701500

702260

Blank, oiled

Zn12M+passivation

22

23.0

49

5.5

6.1

7.05

162000

91000

701600

702270

Blank, oiled

Zn12M+passivation

24

25.0

56

6.0

6.8

7.75

188000

122000

701700

702280

Blank, oiled

Zn12M+passivation

27

28.0

60

6.5

7.3

8.35

246000

161000

701800

702290

Blank, oiled

Zn12M+passivation

30

31.0

70

7.0

8.0

9.20

300000

196000

* dimensions not listed in DIN 267, Part 2

Load washers according to DIN 6796 in different finish and material are available on request. 

 

Product By Industry

Today we serve a broad band of industry with a wide range of quality products.

Need a technical question answered?