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DIN 25201 Standard Dimensions for Wedge-locking washers

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Technical History and International Equivalents of DIN 25201

This norm has been cancelled
This norm has been replaced by DIN 25201-1

Fasteners for the railway sector

These washers are used in pairs, have both radial teeth and are assembled opposite to each other. When used with Bolts and Nuts they should be used on either side. Avoid loosening due to vibration and heavy loads. Perfect Locking is achieved at any Preload Levels. Maximum Safety while Tightening Nut / Bolt. Easy to assemble and dismantle.

Dimensional Drawing and Technical Diagrams

1477_4759.jpg

Key Dimensions and Technical Parameters

Dimensions in mm - source DIN 25201

Publication date: 1986-11
Thread size
d nom
d1 nom
s nom
 ≈ weigth in kg x1000 pcs, (ρ=7,85 kg/dm3)
M 3
 3.40 7.00 1.80 0.4
M 4 4.40 9.00 1.80 0.4
M 5
 5.40 9.00 1.80 0.5
M 6
 6.50 10.80 1.80 0.7
M 8
 8.70 13.50 2.50 1.8
M 10
 10.70 16.60 2.50 2.3
M 12 13.00 19.50 2.50 2.9
M 14
 15.20 23.00 3.40 6.3
M 16
 17.00 25.40 3.40 6.9
M 18
 19.50 29.00 3.40 8.0
M 20
 21.40 30.70 3.40 9.5
M 22
 23.40 34.50 3.40 12.9
M 24
 25.30 39.00 3.40 16.8
M 27
 28.50 42.00 4.60 32.9
M 30
 30.50 47.00 4.60 42
M 33
 33.50 48.50 4.60 39.7
M 36 36.60 58.50 4.60 55.9
M 39 39.50 58.50 4.60 67.4
M 42
 42.50 58.50 4.60 74.7

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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