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ASSY®plus 4 A2 SRCS TERRACE terrace construction screw A2 stainless steel black partial thread raised countersunk head
Special partial-thread screw with grooved shank made of high-quality, black austenitic A2 stainless steel with small raised countersunk head and milling pockets for visually appealing fastening close to edges, without pre-drilling, of terrace floorboards, wooden façades, skirting boards, fences etc. in outdoor areas constantly exposed to weathering
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Ideal power transmission thanks to the RW recess
- More power due to larger contact area at the bit
- 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 many screw diameters
- Compatibility with previous AW drive
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 bit)
- Precise positioning on hard surfaces without slipping thanks to centring pin
- Quick screwing thanks to smooth thread start
Easy countersinking in softwoods and hardwoods
- Visually appealing connections due to lens-shaped, rounded head
- High milling power and chip collection for clean countersinking of the head in softwood/hardwood
- For universal use in wood and metal connections due to milling pockets integrated in the countersunk head
- Can be combined with 90° metal countersinks
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
Stainless mounting for 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 friction-reducing slide coating for easy screwing
- We recommend using the Würth software or the corresponding design aids for planning and dimensioning your assembly. Dimensioning the 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 load capacity can also be reduced, use only screws without an optimised thread tip (tip with milling ribs, drill bit tip, self-clearing groove etc.), such as the ASSY D screws with countersunk head or pan head
Proof of Performance ETA-11/0190
The requirements of the European Technical Approval (ETA) must be observed.
For the fixed connection of two wooden elements
The slightly inclined grooves incorporated into the shank area enable two wooden elements to be permanently connected in the assembled state. Any creaking caused by the drying and swelling of the wooden components is reduced. The mechanical fracture properties of the screw are also increased.
For wood-to-wood connections designed to join tightly
The partial thread starting immediately below the shank allows for wood-to-wood connections designed to join tightly. In this case the thread is positioned entirely in the lower second component.
- For optimum use of the screw, use the RW bit that fits exactly
- Partial threaded screws are ideal for connecting wooden components. To achieve optimum component assembly, the component thickness to be joined tightly must not be greater than the shank length
- ASSY screws are approved for quasi-static loads
- ASSY stainless steel screws can be used to attach hardwood decking and flooring. Pre-drilling is recommended for tropical timber with high bulk density
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