For exceptional applications in utilisation classes 1 and 2. Combines the robustness of a steel screw with excellent rust protection thanks to an extremely corrosion-resistant surface in atmospheres containing salt.
- Corrosion resistance is five times greater than a yellow-galvanised surface (500 h in salt spray test as per DIN EN ISO 9227)
- Its coating gives the ASSY screw a high-quality stainless steel appearance
- Chrome-VI free
Asymmetrical thread
Prevents overturning and makes screwing in easy
AW drive
For perfect bit clamping
Milling pockets
For clean countersinking — including in fittings
End mill
For less friction on the shaft (with diameters of 5 mm or more and lengths of 70 mm or more)
Ring/counter thread
At the tip, enables screwing close to the edge
NoticeScrews may not be used for
- Wood containing large amounts of tannic acid
- Boiler-pressure impregnated wood
- Direct weathering (utilisation class 3)
ASSY 3.0 chipboard screws are optimised for use in wooden materials. Use in plastic anchors may cause a reduction in the load-bearing capacity. Therefore, we recommend only using screws without optimised thread tips (drill tip, mating thread, ring thread, serrated edge, self-clearing groove etc.) in plastic anchors, e.g. ASSY D, DIN 571 hexagon wood screws or Wüpofast screws.
To attach metals to wood, machine a precise cut-out in the metal tab.
Available work documents:
Timber dimensioning software, load tables and detailed processing instructions can be found on the service page www.wuerth.de/assy.
