Hardened washer

Hardened washer from Thomas Potter Ltd

EN 14399-6 plain chamfered washers

The force under the head of a bolt or nut can exceed, at high preloads, the compressive yield strength of the clamped material.

If this occurs excessive embedding and deformation can result in bolt preload loss.

To overcome this hardened washers under the bolt head can be used to distribute the force over a wider area into the clamped material.


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