Universal partially threaded screw for fast, gap-free fastening of wood-wood connections in furniture construction, interior construction or wood construction in dry interior or damp areas
Ideal power transmission thanks to RW drive
- More power thanks to a larger contact surface on the bit
- More stability, one-handed work, precise attachment thanks to the plug-in effect and the perfect fit of the bit
- Fewer bit changes, 1 bit for many screw diameters
- Compatibility with the previous AW drive
- Low splitting effect when the shank is inserted due to the displacement milling effect of the end mill
- Minimized risk of screw breakage due to high breaking torque
- Low risk of injury from protruding metal chips thanks to the integration of the end mill in the thread
- Great protection of the processing tools
- Higher power transmission in hardwoods due to the reinforced, asymmetrical thread flank geometry of the coarse thread
- Better anchoring due to higher thread flanks
- Low splitting effect due to the displacing effect of the dome-shaped milling elements in the tip
- Friction-minimized screwing in of the thread enables the screw-in force to be reduced
- Coordinated heat treatment guarantees high strength values and at the same time guarantees high ductility
Note
- For planning and dimensioning your installation, we recommend using the Würth software or corresponding dimensioning aids. ASSY screws can be measured in the Würth timber construction software from baus 5 mm
- Do not use the screw in directly weathered applications or in damp rooms with an atmosphere containing chlorine gas. For use outdoors and in rooms that are constantly exposed to high levels of 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 optimized for use in wood and wood-based materials. For applications in plastic anchors, where a reduction of the load capacity is possible, only use screws without an optimized thread tip (tip milling cutter, drill bit, scraper groove, etc.), such as the ASSY D screws with countersunk head or pan head
Approval according to ETA-11/0190
The specifications of the ETA (European Technical Approval) must be observed
The specifications of the ETA (European Technical Approval) must be observed
Field of use
For wood-wood connections designed to move together
Due to the partial thread beginning immediately after the shaft, a wood-wood connection designed for contraction is possible. The thread is positioned completely in the lower second component.
For applications in usage class 1 and usage class 2 (from ∅> 4 mm)
For wood-wood connections designed to move together
Due to the partial thread beginning immediately after the shaft, a wood-wood connection designed for contraction is possible. The thread is positioned completely in the lower second component.
For applications in usage class 1 and usage class 2 (from ∅> 4 mm)
- High-quality surface protection, blue passivated zinc, chromium (VI) -free, up to ∅ 4 mm A2K 5 µm, from ∅ 4.5 mm A3K 8 µm layer thickness
- Suitable for use in usage class 1 (interior) and from a ∅> 4 mm in usage class 2 (damp areas or covered outdoor areas) according to EN 1995-1-1: 2010-12 + DIN SPEC 1052-100: 2013-08
- For screws from ∅ 4.5 mm with a zinc layer thickness of 8 µm with Cr (III) passivation, the requirement of classification T2 / C2 according to prEN 14592: 2017 (D) is met
manual
- To increase the contraction effect or head pull-through resistance, the combination with precisely fitting washers for ASSY 4 is recommended
- ASSY screws are approved for quasi-static loads
- The precisely fitting RW bit should be used for optimal use of the screw
- Partially threaded screws are ideal for connecting wood-wood structures. In order to achieve an optimal contraction of the components, the component thickness to be fastened must not be greater than the shaft length
UOM
| MinOrderQuantity | 100 |
|---|
Technical Information
| Surface | Galvanised |
|---|---|
| Nominal diameter | 5 mm |
| Material | Hardened steel |
| Length | 80 mm |
| Thread type | Wood screw thread |
| Head diameter | 9.6 mm |
| Thread length (lg) | 42 mm |
| Head details | Milling pockets |
| Thread design | Partial thread |
| Core diameter | 3.2 mm |
| End milling cutter | Yes |
| Colour | Silver |
| Head height | 3.2 mm |
| Head shape | Countersunk pocket head |
| Internal drive | RW20 |
Catalogue pages as PDF