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ASSY®plus 4 A4 P CSMR60 wood façade screw A4 stainless steel plain partial thread with underhead thread countersunk head 60°
Special partial-thread screw with underhead thread with high tightening effect made of high-quality, austenitic A4 stainless steel with small countersunk head and milling ribs for flat gap-free attachment close to edges, without predrilling, of wooden façades, skirting boards, fences etc. made of durable hardwood in outdoor areas constantly exposed to weathering
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Ideal power transmission thanks to RW drive
- 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, one bit for many screw diameters
- Compatibility with previous AW drive
Easy countersinking in hardwood/softwood with high knot content as well as hard wood fibreboards
- Small 60° countersunk head and therefore narrower geometry for use in seams or with tongue-and-groove connections
- Reduced splitting of component to be mounted when immersing the screw
- Very high milling performance due to milling ribs located at the countersunk head
Maximum reliability of the screw connection due to asymmetrical single thread
- Optimal matching of drill tip and thread geometry
- Excellent anchoring in wood due to asymmetrical arrangement of thread flanks
Precise positioning and very clean drilling due to advanced centring drill tip
- Positioning and drilling without chipping
- Maximum drilling performance and precise drilling process through drilling cutting edges (similar to Forstner bits)
- Precise positioning on hard surfaces without slipping thanks to centring pin
- Quick screwing due to gentle start of thread
Stainless and acid-resistant mounting for inaccessible wood connections in outdoor areas exposed to weathering
- Made of austenitic, non-magnetic and non-rusting A4 stainless steel
- Can be used in rural or urban environments or industrial atmospheres with moderate exposure to chlorides or SO2 or in coastal regions
- For connecting woods rich in tannic acids
- With friction-reducing slide 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 is resistant to acid to a certain extent and not suitable for atmospheres containing chlorine gas
- We recommend using the Würth software or the corresponding design aids for planning and dimensioning your assembly. Dimensions of the ASSY screws can be carried out in the Würth timber construction software from a ∅ of 5 mm
- ASSY 4, ASSYplus 4 and ASSYplus 4 FT chipboard screws are optimised for use in wood and wood materials. For applications in plastic anchors where load capacity 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 connecting two wooden elements without assembly gap
The underhead thread beneath the head with reduced thread pitch and enlarged external diameter allows two wooden elements to be connected without assembly gap. A flush connection of the screw head with the material surface is possible.
- For optimum use of the screw, the right-size RW bit must be used
- Partial-thread screws are ideal for connecting wooden components. To achieve optimum assembly of the components, the components to be fixed must not be thicker than the length of the shank
- ASSY screws are approved for quasi-static loads
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