Our “Flat washers” family has been designed to ensure secure fastening over time for all assembly challenges. They are used in threaded assemblies for distribution of load on a greater surface. They are also used for oversized or oblong holes and for protection of assembled parts.

This family includes a complete range of products: some of them have been designed to be used separately, others have been designed to be assembled on a nut or a screw.

Additional information

External diameter tolerance


Ø External [d2] (mm)

Ø Internal [d1] (mm)

Internal diameter tolerance




Maximum hardness [HV]

Minimum hardness [HV]

Screw diameter

Thickness [e] (mm)

Thickness tolerance

±0, 10

Heat treatment


Part print

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