Flat washer with chamfer
ISO 7090 steel 300 HV, zinc nickel, black
WSH-ISO7090-300HV-(ZNBH)-30
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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 ≥ M2–360h*
- 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
 | |
Suitable for screw thread | M30 |
Internal diameter (d1) | 31 mm |
Outer diameter (d2) | 56 mm |
Thickness (h1) | 4 mm |
Standards | ISO 7090 |
Material | Steel |
Vickers hardness, HV | 300 HV |
Surface | Zinc nickel black |
RoHS-compliant | Yes |
Corrosion protection period | 720 h |
Locking function | Embedding locking device |
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