Round head screw with square neck DIN 603, steel, strength class 8.8, zinc flake, silver (ZFSHL)
DIN 603 steel 8.8 zinc flake
SCR-MHD-DIN603-8.8-(ZFSHL)-M20X120
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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 ZFHSL is as follows:
- Diameter ≥ M6 - 480h*
- Diameter ≥ M10 - 720h*
The designation ZFSHL 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 0.09μ - 0.14μ due to top coat with integrated lubricating particles
 | |
Thread type x nominal diameter (d1) | M20 |
Length (l1) | 120 mm |
Material | Steel |
Property class | 8.8 |
Surface | Flake zinc silver |
Head diameter (dk) | 46.80 mm |
Head height (k1) | 11.05 mm |
Square width (V) | 20.84 mm |
Square height (f) | 15.9 mm |
Standards | DIN 603 |
RoHS-compliant | Yes |
Corrosion protection period | 720 h |
Head type | Cup head square neck |
Head details | With square neck |
Thread type | Metric thread |
Pitch | 2.5 mm |
Thread form | Standard metric thread |
Shank diameter | 20 mm |
Thread length (metric thread) (b) | 46 mm |
Product class | C |
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