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ASSY® 4 COMBI Timber Screw | Zinc Plated | Hexagon Head | Partial Thread | @Pack of 75 | by Wurth
ASSY® 4 COMBI timber screws are designed for robust wood fastening, featuring a zinc-plated finish and hexagon head for enhanced grip. Ideal for timber panel construction and structural woodwork, these screws ensure high power transmission and reduced splitting, making them perfect for both indoor and sheltered applications. With a professional installation recommended, these screws provide durability and compliance with structural design standards.
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Product Name/Title: ASSY® 4 COMBI Timber Screw | Zinc Plated | Hexagon Head | Partial Thread | @Pack of 75 | by Wurth
Brand: Wurth
SKU: 158780100
Alternatively Known As: Timber screws, Wood screws, Hex head wood screws, Zinc plated wood screws, Partial thread screws, ASSY 4 COMBI screws
Technical Specifications
- Nominal diameter: 8 mm
- Length: 100 mm
- Head type: Hexagon head
- Head height: 4.5 mm
- External drive: WS12
- Internal drive: RW40
- Thread type: Wood screw thread
- Thread design: Partial thread
- Design: With shaft
- Thread form: Coarse thread
- Thread length: 60 mm
- Material: Hardened steel
- Surface: Zinc plated
- Suitable materials: Wood, Derived timber product, Softwood, Board plywood (BSP), Hardwood, LVL
- Core diameter: 5.3 mm
- Tip shape: Tip with hilltop milling cutter
- Tip angle: 34 degrees
- Max screw-in angle: 90 degrees
- Min screw-in angle: 0 degrees
- RoHS-compliant: Yes
- Approval: ETA-11/0190
- Dimensions (H x L x W): 4.5mm x 100mm x 8mm
- Weight: 0.15 kg
Key Features
- Powerful partial-thread screw with shank reinforcement for wood-wood fastening with washer or precise 90° metal-wood fastening
- Ideal power transmission thanks to RW drive with larger contact area at the bit
- More stability, one-handed working, precise positioning due to tight-fit recess and perfect bit fit
- Fewer bit changes, one bit for many screw diameters
- Compatibility with previous AW drive
- Precise fit in metal and very high power transmission combined with two drive types
- Shank reinforcement integrated on the underside
- Combination of hexagon and RW drive
- Significant reduction in force required when fastening in the screw
- Less splitting due to displacement milling effect of the milling shank
- Minimized risk of screw breakage due to high breaking torque
- Reduced risk of injury from protruding metal chips due to integration of milling shank into thread
- High protection of application tools
- No over-tightening or stripping and high feed
- Higher power transmission in hardwoods due to reinforced, asymmetrical thread flank geometry
- Better anchoring thanks to higher thread flanks
- Smooth thread start ensures optimized recessing and biting of the screw
- Reduced splitting effect due to displacement effect of dome-shaped milling elements
Professional Installation Requirements
- Professional installation by a qualified tradesperson is recommended to ensure correct fastening and structural integrity.
Applications
- Element construction
- Timber panel construction
- Structural woodwork
- Metal wood connections
- Indoor dry or sheltered wood construction areas
Standards & Compliance
- Complies with AS/NZS 1170 – Structural Design Actions (Wind, Earthquake, Snow Loads)
Environmental Benefits
- RoHS-compliant ensuring reduced hazardous substances
- Durable zinc plating extends product life reducing waste
- High efficiency fastening reduces material damage and waste
Warranty Information
Wurth provides a standard warranty against manufacturing defects; please refer to Wurth's official warranty policy for details.
Available Now
Wurth ASSY® 4 COMBI timber screws are available for immediate purchase, ideal for timber and metal-wood fastening in construction and structural woodwork.
