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Flat washer with large external diameter ISO 7093-1, steel 200 HV, zinc-nickel plated black (ZNBH)
Washers with a zinc plated chromium (VI)-free zinc-nickel plated black coating (ZNBH) are suitable for applications with a high risk of corrosion
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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 ≥ M4–480h*
- Washers for ≥ M10–720h*
- *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
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