ASSY 3.0 nickel-plated steel, PT, cntrsnk head, AW
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Prevents overturning and makes screwing in easy
For perfect bit clamping
For clean countersinking — in fittings as well
For less friction on the shaft (with diameters of 5 mm or more and lengths of 70 mm or more)
Ring or mating thread
At the tip, enables screwing close to the edge
Screws may not be used for
ASSY 3.0 chipboard screws are optimised for use in wooden materials. Use in plastic dowels 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.
Catalogue page as PDF 1
CAD Data (available after login)
Suitable for use outdoors in accordance with utilisation class 2 (NKL 2) DIN 1052:2008 (covered, open structures)
Screw-in angle 0° to 90°. For coniferous wood or wood-based materials made from softwood, the screw connection is made without pre-drilling. To reduce the edge distances, a pre-drilled hole can be made according to the core diameter. When screwing into hardwood, pre-drill according to ETA-11/0190.
Nominal diameter (d)
Head diameter (dh)
Head height (k)
Wood screw thread
End milling cutter
Thread length (lg)
Shape of tip
Tip with counter thread
Angle of the tip
Min./max. screw-in angle
Suitable for use in the following materials
Board ply wood (BSP)
Area of application
On rafter insulation
Screw requiring approval