Hexagonal bolt with thread up to the head ISO 4017, steel, strength class 8.8, zinc-nickel-plated, black (ZNBHL)
ISO 4017 steel 8.8, zinc-nickel, black
SCR-HEX-ISO4017-8.8-(ZNBHL)-M20X70
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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 hrs to base metal corrosion in accordance with DIN EN ISO 9227 NSS
- Chromium(VI)-free
- Adjusted friction coefficient range of 0.09 μ–0.14 μ due to top coat with integrated lubricating particles
- Thermal capacity up to 120°C
- Even coat distribution
- Functional and decorative
ISO 4017 replaces DIN 933 | There is some similarity | Nominal dimensions extended | Width across flats changed for M10, M12, M14 and M22.
 | |
Thread type x nominal diameter (d1) | M20 |
Length (l1) | 70 mm |
Head height (k1) | 12.5 mm |
External drive (s1) | WS30 |
Standards | ISO 4017 |
Material | Steel |
Property class | 8.8 |
Surface | Zinc nickel black |
Corrosion protection period | 720 h |
Head type | Hexagon head |
Drive type | Outer hexagon |
Thread type | Metric thread |
Thread form | Standard metric thread |
Thread design | Full thread |
Thread length (metric thread) | 70 mm |
Product class | A |
RoHS-compliant | Yes |
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