Technical data for Curved spring lock washers

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This product is regulated by the following standards:

Standard DIN 128

Attention

This standard has been withdrawn

Curved spring lock washers

Spring lock washers covered in this standard DIN 128 are deemed to be spring washers designed for use with bolt/nut assemblies involving fasteners of a property class less then 8.8, as specified in ISO 898 part 1. They are intended to counteract the effect of setting which results in bolt/nut assemblies working loose (see DIN 267 part 26). They do not effectively prevent loosening of the assembly under varying radial load and are designed for use with short bolts predominantly subject to thrust.


Dimensions in mm - source DIN 128 - Withdrawn
Publication date: 10/1994 - Supersedes DIN 128: 10/1978
d Nominal size	Thread size	d min	d1 max	b nom	s nom	h min	r	≈ mass in Kg x 1000 pcs (ρ=7,85 kg/dm3)
2	M 2	2.1	4.4	0.9	0.5	0.7	0.1	0.035
2.5	M 2.5	2.6	5.1	1	0.6	0.9	0.1	0.055
3
3.5
4
5
6
7
8
10
12
14
16
18
20
22
24
27
30
36
42
48
56
64
72
80
90
100


Dimensions in mm - source DIN 128 - Withdrawn
Publication date: 10/1987 - Supersedes DIN 128: 04/1968
Nominal size	Thread size	d min	d1 max	b	s nom	h min	r	≈ mass in Kg x 1000 pcs (ρ=7,85 kg/dm3)
2	M 2	2.1	4.4	0.9	0.5	0.7	0.1	0.035
2.5	M 2.5	2.6	5.1	1	0.6	0.9	0.1	0.055
3
3.5
4
5
6
7
8
10
12
14
16
18
20
22
24
27
30
36
42
48
56
64
72
80
90
100

Reproduced by permission of DIN Deutsches Institut für Normung e. V. The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from Beuth Verlag GmbH,Burggrafenstraße 6, 10787 Berlin, Germany.
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Dimensions in mm - source UNI 8839
Publication date: 10/2013 - Supersedes UNI 8839: 04/1985
d1Nominal size	Thread size	d2 MAX	b nom	s nom	h min	h max	r
2.1	M 2	4.4	0.9	0.5	0.7	0.9	0.1
2.4	M 2.2	4.9	1	0.6	0.9	1.1	0.1
2.6
3.1
3.6
4.1
5.1
6.1
7.1
8.2
10.2
12.2
14.2
16.2
18.2
20.2
22.5
24.5
27.5
30.5
36.5

Technical data for Curved spring lock washers

This product is regulated by the following standards:

Standard DIN 128

Standard UNI 8839

Curved spring lock washers

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