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Hexagon nut with flange
EN 1661 steel 8 black zinc nickel
NUT-HEX-FLG-EN1661-8-(ZNBHL)-M8
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Fasteners with a zinc-plated chromium (VI)-free zinc-nickel black coating (ZNBHL) are suitable for applications with a high risk of corrosion. The coating comprises a zinc-nickel alloy layer and a sealing coat (top coat with integrated lubricating particles).
Corrosion resistance:
- Diameter ≥ M2 – 360h*
- Diameter ≥ M4 – 480h*
- Diameter ≥ 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
- Chrome(VI)-free
- Adjusted friction coefficient range from 0.09μ - 0.14μ due to top coat with integrated lubricating particles
- Thermal capacity up to 120°C
- Even coating distribution
- Functional and decorative
ISO EN 1661 replaces DIN 6923 | There is some similarity | Fine thread removed | Width across flats for size M10 changed from 15 mm to 16 mm.
Datasheets(X)
 | |
Thread type x nominal diameter (D) | M8 |
Height (h1) | 8 mm |
Flange diameter (dc) | 17.90 mm |
External drive (s1) | WS13 |
Standards | EN 1661 |
Material | Steel |
Property class | 8 |
Surface | Zinc nickel black |
RoHS-compliant | Yes |
Corrosion protection period | 720 h |
Design | With flange |
Thread form | Standard metric thread |
Min./max. friction | 0.09-0.14 µ |