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ASSY® 4 PH fittings screw Steel zinc flake full thread pan head
Full-thread screw with visually appealing pan head for universal fixing of metal fittings or plastic supports in C4 atmospheres in outdoor areas
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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, 1 bit for many screw diameters
- Compatibility with previous AW drive
Flat fastening of sheet metal onto substrate for secondary purposes
- Flat, cylindrical pan head rounded with a lens
- Large surface contact area
No over-tightening or stripping and high feed
- Higher power transmission in hardwoods due to reinforced, asymmetrical thread flank geometry of the coarse thread
- Better anchoring 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
- Friction-reduced thread rotation allows reduction of the screw-in force to be applied
- We recommend using the Würth software or the corresponding design aids for planning and designing your assembly. ASSY screws can be designed from a ∅ 5 mm in the Würth timber construction software
- Do not use the screw in applications with direct exposure to the elements or in wet areas with chlorine gas atmospheres. If used outdoors and in rooms that are constantly exposed to high humidity, please use ASSY 4 A2 PH stainless steel screws
- ASSY 4, ASSYplus 4, and ASSYplus 4 FT chipboard screws are optimised for use in wood and engineered wood. 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
ETA-11/0190 approved
The requirements of the European Technical Approval (ETA) must be observed
For wood-wood connections designed to pull together
The full thread starting immediately below the head allows for wood-wood or steel-wood connections designed to pull together.
Can be used for outdoor applications and usage class 3 according to EN 1995-1-1
- Five times higher corrosion protection of the zinc-flake surface, chrome(VI)-free, 20 µm layer thickness, 1000h to salt spray test according to DIN EN ISO 9227
- Usage class C4 according to EN ISO 12944-2
- For optimum use of the screw, use the exact fitting RW bit.
- Full-thread screws are suitable for secure fastening of fittings or thin materials. The screw length to be selected should be less than the plate thickness of the screw surface
- ASSY screws are approved for quasi-static loads
- For a load-bearing wood-metal connection, ASSY screws must be tightened with a tightening torque. Tightening torque = required prevailing torque x 1.2 < 90% of the breaking torque
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