ASSY® 4 RCS fittings screw Steel zinc-plated full thread RCS head painted white
ASSY 4 RCS steel zinc-plated FT w. painted head RW
SCR-RCS-WO-RW20-(A2K)-HD-WHTE-3,5X45/40
ASSY 4 RCS
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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 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
Form-fit connection of the 90° countersunk head to metal fittings with 90° countersinks or in wooden products with high bulk density
- Visually appealing connections due to lens-shaped, rounded head
- Pulling together without head milling due to lack of milling elements and head is inserted by pressing
Maximum overtightening safety with high feed performance
- 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
- Low gap effect due to displacement effect of the dome-shaped milling elements in the tip
- Reduced-friction thread rotation allows reduction of the screw-in force that is applied
- We recommend using the Würth software or the corresponding design aids for planning and designing your installation. Dimensioning 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
Datasheets(X)
For steel-wood connections or combinations of fittings designed for tensile forces
The full thread starting immediately below the head allows for e.g. a highly load-bearing fitting-to-wood or sheet material-to-wood connection designed for tensile forces. The maximised thread length increases the screw's pull-out strength.
For applications in utilisation class 1 and 2 (from diameter > 4 mm)
- High-quality surface protection zinc blue passivated chromium(VI)-free, up to diameter 4 mm A2K 5 µm, from diameter 4.5 mm A3K 8 µm layer thickness
- Suitable for use in utilisation class 1 (interior) and from diameter > 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
- For screws from diameter 4.5 mm with zinc layer thickness of 8 µm with Cr(III) passivation, the requirement of classification T2/C2 is fulfilled in accordance with prEN 14592:2017 (D)
- 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
- For a load-bearing wood-metal connection, ASSY screws must be tightened to a torque value. Tightening torque = required prevailing torque x 1.2 < 90 % of the breaking torque
- ASSY screws are approved for quasi-static loads
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Nominal diameter (d) | 3.5 mm |
Length (l) | 45 mm |
Thread type | Wood screw thread |
Thread design | Full thread |
Thread form | Coarse thread |
Thread length (lg) | 40 mm |
Core diameter | 2.1 mm |
Shape of tip | Tip with hilltop milling cutter |
Angle of the tip | 28 Degree |
Head type | Raised countersunk head |
Colour of head | White |
Head diameter (dh) | 7 mm |
Head height (k) | 2.3 mm |
Internal drive | RW20 |
Material | Hardened steel |
Surface | Zinc plated |
Max. screw-in angle | 90 Degree |
Min. screw-in angle | 0 Degree |
Product weight (per item) | 2.028 g |
Suitable for use in the following materials | Wood |
Area of application | Universal |
Screw requiring approval | Yes |
Approval | ETA-11/0190 |
RoHS-compliant | Yes |