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DIN 7349 Standard Dimensions for Flat washers for bolts for heavy type spring pins

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This standard DIN 7349 defines requirements for washers for bolts with heavy clamping sleeves.

Dimensional Drawing and Technical Diagrams

241_4148.jpg

Key Dimensions and Technical Parameters

Dimensions in mm - source DIN 7349
Publication date 08/2009 - Supersedes DIN 7349: 07/1974
thread size
d
d1
s
 weight in Kg x 1000 pcs (ρ=7,85 kg/dm3)
M 3
3.2
9
1
 0.436
M 4
4.3
12
1.6
 1.24
M 5
5.3
15
2
 2.43
M 6
6.4
17
3
 4.59
M 8
8.4
21
4
 9.15
M 10
10.5
25
4
 12.7
M 12
13
30
6
 27.1
M 14
15
36
6
 39.6
M 16
17
40
6
 48.5
M 18
19
44
8
 77.4
M 20
21
44
8
 73.4
M 22
23
50
8
 97.1
M 24
25
50
10
 116
M 27
28
60
10
 174
M 30
31
68
10
 226

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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