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Flat washer without chamfer
Flat washer without chamfer - 1
Flat washer without chamfer - 2

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Flat washer without chamfer

ISO 7089, steel 200 HV, zinc nickel, black (ZNBH)

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Washers with a zinc-plated chromium (VI)-free zinc-nickel black coating (ZNBH) are suitable for applications with a high risk of corrosion. They are the perfect visual and functional addition to the screws and nuts in the programme that have a zinc-nickel black (ZNBHL) surface.



Corrosion resistance:



  • Washers for ≥ M2–360 h*

  • Washers for ≥ M4–480 h*

  • Washers for ≥ M10–720 h*


  • *No base metal corrosion at points without thread in salt spray mist testing according to DIN EN ISO 9227 NSS


Overview of advantages:



  • Corrosion resistance of up to 720 hours against base metal corrosion in accordance with DIN EN ISO 9227 NSS

  • Chromium(VI)-free

  • Thermal capacity up to 120°C

  • Even coating distribution

  • Functional and decorative