Hexagonal bolt with flange
EN 1665 steel 8.8 zinc-nickel black
SCR-HEX-FLSH-EN1665-8.8-(ZNBHL)-M8X20
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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 - 360 h*
- Diameter ≥ M4 - 480 h*
- Diameter ≥ 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
- Adjusted friction coefficient range from 0.09-0.14 μ due to top coat with integrated lubricating particles
- Thermal capacity up to 120°C
- Even coating distribution
- Functional and decorative
ISO EN 1665 replaces DIN 6921 | There is some limited similarity | Some head heights changed | Flange diameter is unchanged | Widths across flats for M10, M12, M14 and M16, M20 changed | Strength 12.9 removed | Fine thread removed.
 | |
Thread type x nominal diameter (d1) | M8 |
Length (l1) | 20 mm |
Head diameter (dc) | 18 mm |
Head height (k1) | 8.10 mm |
Standards | EN 1665 |
Material | Steel |
Property class | 8.8 |
Surface | Zinc nickel black |
RoHS-compliant | Yes |
Corrosion protection period | 480 h |
Head type | Hexagon head with flange |
Drive type | Outer hexagon |
External drive (s1) | WS13 |
Thread type | Metric thread |
Pitch | 1.25 mm |
Thread form | Standard metric thread |
Thread design | Full thread |
Shank diameter | 8 mm |
Thread length (metric thread) | 20 mm |
Product class | A |
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