ASSY®plus 4 A2 TH glass strip screw Black A2 stainless steel, partial thread, top head
ASSYplus 4 A2 TH A2 st. steel blk PT TH RW
SCR-TH-DBIT-A2-BLCK-PT-RW10-3,5X50/27
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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
Precise positioning and very clean drilling due to advanced centring drill tip
- Chip-free positioning and drilling
- Powerful and precise drilling due to drilling cutting edges (similar to a Forstner bit)
- Centring pin ensures precise positioning on hard surfaces without slipping
- Quick screwing due to smooth thread start
Easy countersinking in hardwood and softwood
- Visually appealing connections due to lens-shaped, rounded head
- High milling performance and chip collection for clean countersinking of the head in softwood/hardwood
- For universal use in timber 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
- Asymmetrical single-start thread
- Through optimal combination of drill tip and thread geometry
- Excellent anchorage in wood due to asymmetrical arrangement of thread flanks
Stainless use for accessible timber 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
- 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 screw dia. of 5 mm
- ASSY 4, ASSYplus 4 and ASSYplus 4 VG chipboard screws are optimised for use in wood and engineered wood. For applications in plastic anchors where a reduction in the admissible load may occur, only use 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
Approved in accordance with ETA-11/0190
The requirements of the European Technical Approval (ETA) must be observed.
Datasheets(X)
For wood-to-wood connections designed to be joined tightly
The partial thread starting immediately below the shank allows for wood-to-wood connections designed to be joined tightly. In this case, the thread is positioned entirely in the lower component.
Can be used for outdoor applications and utilisation class 3
- For optimal use of the screw, use the RW bit that fits exactly
- Partial-thread screws are ideal for connecting timber components. To ensure the components are optimally joined, the components must not be thicker than the length of the screw shank
- ASSY screws are approved for quasi-static loads
- ASSY stainless steel screws can be used to install hardwood decking and flooring. Pre-drilling is recommended for tropical timber with high bulk density
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Nominal diameter (d) | 3.5 mm |
Length (l) | 50 mm |
Thread length (lg) (lg) | 27 mm |
Screw-thread length with drill tip (b) (b) | 30 mm |
Colour of head | Black |
Head type | Top head |
Head diameter (dh) | 5.2 mm |
Head height (k) | 3.2 mm |
Internal drive | RW10 |
Thread type | Wood screw thread |
Thread form | Single start thread |
Core diameter | 2.5 mm |
Material | Stainless steel A2 |
Surface | Black atramentised |
Max. screw-in angle | 90 Degree |
Min. screw-in angle | 45 Degree |
Suitable for use in the following materials | Board ply wood (BSP), Wood, Derived timber product, Hardwood, LVL, Softwood |
Area of application | Outdoors, Balcony, Façades, Wet areas, Play equipment, Board walk, Terrace, Fence |
Approval | ETA-11/0190 |
Product weight (per item) | 1.700 g |
RoHS-compliant | Yes |
Select RAL-colour code
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