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ASSY® 4 CS BLACK fittings screw Zinc-nickel-plated black full thread countersunk head
Full thread screw with countersunk head for fastening metal fittings or cabinet connectors in wood or engineered wood boards
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Ideal power transmission thanks to RW recess
- More power due to larger contact area at the bit
- More stability, one-handed working, precise positioning due to the tight-fit recess and perfect fit of the bit
- Fewer bit changes, 1 bit for many screw diameters
- Compatibility with previous AW drive
Positive connection to metal fittings or in wooden products with high bulk density
- For fitting connection with full-thread steel screws
- Perfect fit of 90° head in fittings with metal countersinks
- Joins components tightly without milling pockets and milling elements below the head
- The head is countersunk by pressing
No over-tightening or stripping at high feed
- Higher power transmission in hardwoods due to reinforced, asymmetrical thread flank geometry of the coarse thread
- Better anchorage thanks to higher thread flanks
Smooth thread start ensures optimised recessing and biting of the screw
- Reduced splitting thanks to displacement effect of the dome-shaped milling elements in the tip
- Friction-minimised rotation of the thread enables reduction of the screw-in force to be applied
- We recommend using the Würth software or the corresponding design aids for planning and designing your project. Designing the ASSY screws can be carried out in the Würth timber construction software from a diameter of 5 mm
- Do not use the screw in applications with direct exposure to the elements or in humid rooms with atmospheres containing chlorine gas. If used outdoors and in rooms that are constantly exposed to high humidity, please use ASSY 4 A2 or A4 stainless steel screws and, if the atmosphere contains chlorine, HCR stainless steel screws
- ASSY 4, ASSYplus 4 and ASSYplus 4 VG chipboard screws are optimised for use in wood and engineered woods. For applications in plastic anchors where the load can also be reduced, use only screws without an optimised thread tip (tip with milling ribs, drill tip, self-clearing groove etc.), such as the ASSY D screws with countersunk head or pan head
ETA-11/0190 approved
The requirements of the European Technical Approval (ETA) must be observed
For steel-wood connections designed for tensile forces
The full thread starting immediately below the head allows for e.g. a highly load-bearing fitting/wood or plate material/wood connection designed for tensile forces. An increased screw tensile strength is achieved by the maximum thread length.
For applications in utilisation class 1 and 2 (from dia. > 4 mm)
- High-quality surface protection zinc-nickel-plated black chrome (VI)-free
- Suitable for use in utilisation class 1 (interior) and from dia. > 4 mm in utilisation class 2 (wet area or covered outdoor area) according to EN 1995-1-1:2010-12 + DIN SPEC 1052-100:2013-08
- ASSY screws are approved for quasi-static loads
- For optimum use of the screw, use the RW bit that fits exactly
- Full-thread screws are suitable for secure fastening of metal fittings or thin materials. Select a screw length that is less than the plate thickness of the screw surface
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