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Technical data for Split lock washers
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This product is regulated by the following standards:
Standard DIN 127
Attention
This standard has been withdrawn
Split lock washers with tang ends type A and square ends type B
Spring lock washers covered in this standard (DIN 127) are deemed to be spring washers designed for use with bolt/nut assemblies involving fasteners of property class 5.8 or less, as specified in ISO 898 Part 1.
Dimensions in mm - source DIN 127 A & B Withdrawn
Publication date: 10/1987 - Supersedes 12/1970
Nominal size
Thread size
d1 min.
d2 max
b nom
s nom
k
r
h
≈ weight in Kg x 1000 pcs (ρ=7,85 kg/dm3)
Type A
Type B
min.
max.
min.
max.
2
M 2
2.1
4.4
0.9
0.5
-
0.1
-
-
1
1.2
0.033
2.2
M 2.2
2.3
4.8
1
0.6
-
0.1
-
-
1.2
1.4
0.05
2.5
M 2.5
2.6
5.1
1
0.6
-
0.1
-
-
1.2
1.4
0.053
3
3.5
4
5
6
7
8
10
12
14
16
18
20
22
24
27
30
36
39
42
45
48
52
56
60
64
68
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. WARNING - The datasheets provided by this site (fasten.it) are only advisory in support of the commercial activity and their use by anyone is entirely voluntary. Reliance on their contents for any purpose by anyone is at his/her sole risk and Fasten.it s.r.l./www.fasten.it is not responsible for any loss, claim or damage arising there from.
Standard UNI 1751
Attention
This standard has been withdrawn
Single coil spring washers - Normal series
The standard specifies the dimensions and the technical conditions of supply of the split spring washers to be used as a support element for screws, nuts and bolts of a class not higher than 5.8 with right-hand thread. The purpose of the application is to counter the loosening of a threaded connection due to settling of the support surfaces or thermal expansion.
For this purpose, the user must carefully evaluate the residual elastic force values specified in table 1.
The anti-unscrewing effect is mainly generated by the action of the ends of the washer, with its particular chisel shape, on the relative supporting surfaces.
The use of split spring washers is not recommended in threaded connections subject to forces
perpendicular to its axis.
It should also be avoided for use in connections subject to particularly heavy use (for example in the event of frequent vibrations) or subject to specific safety regulations.
Dimensions in mm - source UNI 1751
Publication date: 01/1988 - Supersedes 12/1970
Thread size
d1
d2 max
b nom
s1 nom
r
k
h1
≈ weight in Kg x 1000 pcs (ρ=7,85 kg/dm3)
Type A
Type B
max
min
min.
max.
min.
max.
M 2
2.1
2.4
4.4
0.9
0.5
0.1
-
-
-
1
1.2
0.033
M 2.2
2.3
2.6
4.8
1
0.6
0.1
-
-
-
1.2
1.4
0.05
M 2.5
2.6
2.9
5.1
1
0.6
0.1
-
-
-
1.2
1.4
0.053
M 3
M 3.5
M 4
M 5
M 6
M 7
M 8
M 10
M 12
M 14
M 16
M 18
M 20
M 22
M 24
M 27
M 30
M 33
M 36
M 39
M 42
M 45
M 48
M 52
M 56
M 60
M 64
M 68
M 72
M 80
M 90
M 100
Dimensions in mm-Split lock washers commercial type
Nominal size
Thread size
d
b
s
D
≈ weight in Kg x 1000 pcs (ρ=7,85 kg/dm3)
3.2
4.3
5.3
6.4
7.4
8.4
10.5
12.5
15
17
19
21
23
25
28
Dimensions in mm-Split lock washers heavy type
nominal size
thread size
d
b
s
D
≈ weight in Kg x 1000 pcs (ρ=7,85 kg/dm3)
3.2
4.2
5.2
6.3
7.3
8.3
10.4
12.4
14.5
16.6
18.6
20.6
22.7
24.7
The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from UNI - Ente italiano di normazione Via Sannio 2 - 20137 Milano, Italy. WARNING - The datasheets provided by this site (fasten.it) are only advisory in support of the commercial activity and their use by anyone is entirely voluntary. Reliance on their contents for any purpose by anyone is at his/her sole risk and Fasten.it s.r.l./www.fasten.it is not responsible for any loss, claim or damage arising there from.
Standard NF E25-515
Attention
This standard has been withdrawn
Spring lock washers standard series W Symbol
Dimensions in mm - source NF E 25515 regular series - Withdrawn
Publication date: 05-1986
thread size
d1 nom
d2 nom
b nom
s nom
h
M 3
3.5
5.2
1
1
≈2s
M 4
4.5
7.3
1.5
1.5
≈2s
M 5
5.5
8.3
1.5
1.5
≈2s
M 6
6.5
10.4
2
2
≈2s
M 7
M 8
M 10
M 12
M 14
M 16
M 18
M 20
M 22
M 24
M 27
M 30
M 33
M 36
M 39
M 42
M 45
M 48
M 52
M 56
M 60
M 64
M 68
M 72
M 76
M 80
The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from AFNOR - Association Française de Normalization, 11 Rue Francis de Pressensé, 93210 Saint-Denis, France. WARNING - The datasheets provided by this site (fasten.it) are only advisory in support of the commercial activity and their use by anyone is entirely voluntary. Reliance on their contents for any purpose by anyone is at his/her sole risk and Fasten.it s.r.l./www.fasten.it is not responsible for any loss, claim or damage arising there from.
Standard NF E25-516
Attention
This standard has been withdrawn
Single coil spring washers. Small series. Symbol WZ.
Dimensions in mm - source NF E 25516 light series
Publication date: 06-2009
thread size
d1 nom
d2 nom
b nom
s nom
h
M 3
3.5
5.2
1
0.6
≈2s
M 4
4.5
7.3
1.5
1
≈2s
M 5
M 6
M 7
M 8
M 10
M 12
M 14
M 16
M 18
M 20
M 22
M 24
M 27
M 30
The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from AFNOR - Association Française de Normalization, 11 Rue Francis de Pressensé, 93210 Saint-Denis, France. WARNING - The datasheets provided by this site (fasten.it) are only advisory in support of the commercial activity and their use by anyone is entirely voluntary. Reliance on their contents for any purpose by anyone is at his/her sole risk and Fasten.it s.r.l./www.fasten.it is not responsible for any loss, claim or damage arising there from.
Standard NF E25-517
Single coil spring washers - Strong series - Symbol WL
This standard specifies the characteristics of the heavy series split spring lock washers, the normal series and the reduced series are subject respectively to the NF E25-515 and NF E25-516 standards. The tests to be carried out are described in the NF E 25-515 standard.
Dimensions in mm - source NF E25-517
Publication date: 06-2009
Thread size
d1 min.
d1 max
d2≈
b min
b max
s min
s max
h ≈2s
≈ weight in Kg x 1000 pcs (ρ=7,85 kg/dm3)
M 3
3.50
3.98
6.20
1.30
1.70
0.80
1.20
2.00
0.18
M 4
M 5
M 6
M 7
M 8
M 10
M 12
M 14
M 16
M 18
M 20
M 22
M 24
The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from AFNOR - Association Française de Normalization, 11 Rue Francis de Pressensé, 93210 Saint-Denis, France. WARNING - The datasheets provided by this site (fasten.it) are only advisory in support of the commercial activity and their use by anyone is entirely voluntary. Reliance on their contents for any purpose by anyone is at his/her sole risk and Fasten.it s.r.l./www.fasten.it is not responsible for any loss, claim or damage arising there from.
Standard BS 4464 B
Spring lock washers
Dimensions in mm - source BS 4464 Table B
Publication Date: 05/1969
Thread size
d1 min
d2 max
b min
b max
s min
s max
M 3
3.1
5.5
1.2
1.4
0.7
0.9
M 3.5
3.6
6
1.2
1.4
0.7
0.9
M 4
4.1
6.95
1.4
1.6
0.8
1
M 5
M 6
M 8
M 10
M 12
M 14
M 16
M 18
M 20
M 22
M 24
M 27
M 30
M 33
M 36
M 39
M 42
M 45
M 48
The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from BSI -The British Standards Institution, 389 Chiswick High Road, London, W4 4AL, UK. WARNING - The datasheets provided by this site (fasten.it) are only advisory in support of the commercial activity and their use by anyone is entirely voluntary. Reliance on their contents for any purpose by anyone is at his/her sole risk and Fasten.it s.r.l./www.fasten.it is not responsible for any loss, claim or damage arising there from.
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Split lock washers
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Suppliers of Split lock washers
This product is regulated by the following standards:
Lederer is one of the most specialized European supplier of stainless steel fasteners, normed and standardized items, special parts by drawing and C-parts management.
More than 25,000 different articles directly from stock: screws, pins, nuts, rings, washers, made from stainless steel; standard and designed parts; DIN, EN, ISO, L(ederer) and other standards; special parts and special materials.
CERTIFICATIONS: DIN EN ISO 9001 | DIN EN ISO 14001 | ISO 45001:2018
Premium Advertiser
BELGIUM
pgb-Europe nv
pgb-Europe holds over 40.000 SKU of fasteners, fixings in stock.
With focus on high product quality and optimal product presentation we are one of the leading suppliers of fasteners in the Benelux.
BSC CORPORATION LTD is a group founded in 2005, headquartered in Shanghai and developed in two factories, respectively located in Xinghua, Jiangsu province and Liaocheng, Shandong province.
The company is specialized in washers, stamping parts and other kinds of fasteners. The registered capital amounts to 50 million yuan.
ITALY
BUORA D.P.U. s.r.l.
Founded in 1969, Buora D.P.U. is a distributor certified following ISO 9001.
The company offers the complete range of high strength fasteners, ready on stock, both coarse and fine pitches with metric and inch threads.
Distributor of prestigious brands such as UNBRAKO and NORD-LOCK, for Buora D.P.U. the service always comes first, therefore there is not minimum quantity required.
CERTIFICATIONS: UNI EN ISO 9001:2015
ITALY
Commercial DADO S.p.A.
Distributor of fasteners and tools. 9 warehouses (for a total capacity of 60000 pallet places) are located in northern Italy, working with the industry and retail.
Kanban, consignment stock, vending machines are the services we provide.
CERTIFICATIONS: ISO 9001:2015
ITALY
CORBETTA ERMANNO S.R.L.
Production of special items following the customer drawing: special screws, rivets, half bored rivets, pins, spacers and sleeves.
Materials: iron, stainless steel, copper, brass, aluminium with heat and galvanic treatments.