Countersunk screw with hexagon socket head ISO 10642, steel, strength class 8.8, zinc-nickel-plated, silver (ZNSHL)
ISO 10642 steel 08.8, zinc-nickel
SCR-ISO10642-08.8-HS5-(ZNSHL)-M8X70
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Fasteners with a zinc-plated chromium (VI)-free zinc-nickel silver coating (ZNSHL) 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 – 600h*
- 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 10642 replaces DIN 7991 | There is some limited similarity (some head heights and head diameters have been changed | nominal Ø M18, M22, M24 are omitted | Stainless steels removed | strength classes 10.9 and 12.9 added).
These screws can only be subjected to limited loads due to their head geometry, see DIN EN ISO 898-1
Datasheets(X)
 | |
Thread type x nominal diameter (d1) | M8 |
Length (l1) | 70 mm |
Head diameter (dk) | 16.43 mm |
Head height (k1) | 4.96 mm |
Internal drive (s1) | HS5 |
Standards | ISO 10642 |
Material | Steel |
Property class | 08.8 |
Surface | Zinc nickel silver |
Corrosion protection period | 600 h |
RoHS-compliant | Yes |
Head type | Countersunk head |
Drive type | Hexagon socket |
Thread type | Metric thread |
Thread form | Standard metric thread |
Thread design | Partial thread |
Product class | A |
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