Hexagon Socket Head Cap Screw
ISO 4762 steel 10.9 zinc flake silver (ZFSHR)
SCR-CYL-ISO4762-10.9-HS17-ZFSHR-M20X240
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Zinc flake coatings are chrome (VI)-free corrosion protection coatings for commercial vehicle construction, construction machines, agricultural vehicles and equipment, and all other fields that require vehicle construction standard corrosion protection requirements.
The corrosion resistance of ZFSHR is as follows:
- Diameter ≥ M6 - 480h*
- Diameter ≥ M10 - 720h*
- * Guideline values: No base metal corrosion at points without thread in salt spray mist testing according to DIN EN ISO 9227 NSS.
The designation ZFSHR refers to the following corrosion coating:
- Zinc flake coating, with top coat, silver colour, with lubrication that alters the friction coefficient.
- Adjusted friction coefficient range from 0.12μ – 0.18μ due to top coat with integrated lubricating particles
ISO 4762 replaces DIN 912 | There is some similarity | Nominal range changed | Fine thread moved to ISO 12474.
Datasheets(X)
 | |
Thread type x nominal diameter (d1) | M20 |
Length (l1) | 240 mm |
Head diameter (dk) | 29.67 mm |
Head height (k1) | 19.48 mm |
Standards | ISO 4762 |
Material | Steel |
Property class | 10.9 |
Surface | Flake zinc silver |
RoHS-compliant | Yes |
Head type | Socket head |
Drive type | Hexagon socket |
Internal drive (s1) | HS17 |
Thread type | Metric thread |
Shank diameter (d2) | 20 mm |
Product class | A |
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