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ASSY 4 A2 P CSMR60 A2 stainless steel partial-thread façade construction screw with underhead thread and 60° countersunk head
Special partially threaded screw with underhead thread that pulls components together, made of high-quality, austenitic A2 stainless steel with small countersunk head and milling ribs for flat, gap-free fastening, without predrilling of wooden façades, terraces, skirting boards, fences etc. made of softwood in outdoor areas constantly exposed to weathering.
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Variants
RW recess ensures optimal power transmission
- Larger contact surface at the bit offers increased power
- More stability, one-handed working and precise positioning due to the tight-fit recess and perfect fit of the bit
- Fewer bit changes, one bit for multiple screw diameters
- Compatibility with previous AW recess
Easy countersinking in softwood with many knots as well as in hard manufactured boards
- Small 60° countersunk head and therefore narrower geometry for use in seams or for tongue-and-groove connections
- Reduced splitting of component to be mounted when inserting the screw
- Very high milling performance due to milling ribs located in the countersunk head
Maximum reliability of the screw connection due to asymmetrical coarse thread
- Optimal combination of drill tip and thread geometry
- Excellent anchorage in wood due to asymmetrical arrangement of thread flanks
Smooth thread start ensures optimised piercing and engaging of the screw
- Minimal splitting due to material displacement by the dome-shaped milling elements in the tip
- Minimal friction when screwing in the thread reduces the amount of force required
Stainless for use in accessible wood connections in outdoor areas exposed to weathering
- Made of austenitic, non-magnetic and non-rusting A2 stainless steel
- Can be used in a rural or urban environment or in an industrial atmosphere without significant exposure to chlorides or SO2
- With anti-friction coating for easy screwing
- Austenitic stainless steel is characterised by a high degree of corrosion resistance against aggressive industrial air, sea air, tap water, river water, mine water and salt water, as well as woods containing tannic acid. It has limited resistance to acid and is not suitable for atmospheres containing chlorine gas
- We recommend using the Würth software or corresponding design aids for planning and designing your installation. Dimensioning of ASSY screws can be carried out in the Würth timber construction software from a diameter of 5 mm
- 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
- A range of services are available on the ASSY® Service website www.wuerth.de/assy
Approved in accordance with ETA-11/0190
The requirements of the European Technical Approval (ETA) must be observed.
The ASSY 4 A2 P CSMR60 A2 stainless steel partial-thread façade construction screw is ideal for gap-free fastening of wooden façades, decking, battens and fences made of coniferous wood in permanently exposed outdoor areas, without pre-drilling.
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