Flat washer without chamfer ISO 7089 steel 200 HV, zinc-nickel black (ZNBH)

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