Flat-head screw with H cross recess ISO 7045, steel 4.8, zinc-nickel, black (ZNBHL)
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Flat-head screw with H cross recess ISO 7045, steel 4.8, zinc-nickel, black (ZNBHL)
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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
NoticeISO 7045 replaces DIN 7985 | There is some similarity | some head heights and head diameters changed | thread lengths changed | penetration depths of recessed heads changed | standard title of Pan-head screw changed to flat head screw
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