Raised countersunk head screw with H cross recess ISO 7047, black zinc-nickel plated 4.8 steel (ZNBHL)
ISO 7047 steel 4.8, zinc nickel black
SCR-ISO7047-4.8-H2-(ZNBHL)-M5X20
Art.-no. 51072520
EAN 4057708641550
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Fasteners with a galvanised chromium(VI)-free, zinc-nickel plated (ZNBHL black or ZNSHL silver) are suitable for applications with the highest risk of corrosion. The coating comprises a zinc nickel alloy layer and a sealing coat (top coat with integrated lubricating particles).
The advantages at a glance:
- Resistance of up to 720 hours against base metal corrosion in accordance with DIN EN ISO 9227 NSS
- Adjusted friction coefficient range from 0.09-0.14 μ due to top coat with integrated lubricating particles
- Thermal load capacity up to 120 °C
- Even coating distribution
- Functional and decorative
ISO 7047 replaces DIN 966 | Standards are not fully equivalent | Some head heights and head diameters have been changed | Thread lengths changed | Strength class 5.8 and 8.8 omitted | Cross recess penetration depths changed.
Datasheets(X)
 | |
Thread type x nominal diameter (d1) | M5 |
Length (l1) | 20 mm |
Head diameter (dk) | 9.3 mm |
Head height (k1) | 2.7 mm |
Standards | ISO 7047 |
Material | Steel |
Property class | 4.8 |
Surface | Zinc nickel black |
RoHS-compliant | Yes |
Head type | Raised countersunk head |
Drive type | Crosshead |
Internal drive | H2 |
Thread type | Metric thread |
Pitch | 0.8 mm |
Thread form | Standard metric thread |
Product class | A |
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