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Window Construction Screw | Hardened Steel | Zinc-Plated Full Thread | Raised Countersunk Head | @Pack of 1000 | by Wurth
The ASSY®plus 4 FBS RCS window construction screw is designed for seamless fastening in window construction and furniture applications. Made from hardened steel and zinc-plated for durability, this screw features a raised countersunk head and full thread for optimal power transmission and stability. Ideal for professional tradespeople, it ensures a gap-free fit and prevents wood splitting during installation.
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Product Name/Title: Window Construction Screw | Hardened Steel | Zinc-Plated Full Thread | Raised Countersunk Head | @Pack of 1000 | by Wurth
Brand: Wurth
SKU: 178744030
Alternatively Known As: Window construction screw, timber window screw, zinc-plated wood screw, countersunk head screw, full thread wood screw
Technical Specifications
- Material: Hardened steel
- Surface: Zinc plated
- RoHS-compliant: Yes
- Nominal diameter (d): 4 mm
- Length (l): 30 mm
- Head diameter (d h): 7 mm
- Head height (k): 1.6 mm
- Internal drive: RW20
- Thread length (lg): 23 mm
- Screw-thread length with drill tip (b): 26.5 mm
- Head type: Raised countersunk head
- Head details: Restraining ribs
- Thread type: Wood screw thread
- Thread design: Full thread
- Thread form: Single start thread
- Core diameter: 2.5 mm
- Shape of tip: Drilling tip
- Min. screw-in angle: 0 Degree
- Max. screw-in angle: 90 Degree
- Suitable materials: Board ply wood (BSP), Wood, Derived timber product, Hardwood, LVL, Softwood, Construction timber (KVH), OSB, Chipboard, Solid wood panel (SWP)
- Approval: ETA-11/0190
- Declaration of performance (EU-CPR): Yes
- Dimensions (H x L x W): 1.6mm x 30mm x 7mm
- Weight: 0.001655 kg
Key Features
- Full threaded screw with raised countersunk head and restraining ribs for gap-free fastening close to edges.
- Mounting of metal fittings to timber windows without pre-drilling the wood.
- 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, one bit for many screw diameters.
- Compatibility with previous AW drive.
- Visually appealing connections in window construction.
- Lens-shaped, rounded head for a visually appealing window fitting connection.
- Spring-loaded effect of the restraining ribs prevents the screw from overturning and destroying the head.
- Maximum reliability of the screw connection due to asymmetrical single thread.
- Optimal matching of drill tip and thread geometry.
- Excellent anchoring in wood due to asymmetrical arrangement of thread flanks.
- Small edge distances possible due to wedge-shaped drill tip with parallel cutting edges.
- Assembly without gaps; wood does not split or rupture.
Professional Installation Requirements
- Installation by a professional or experienced tradesperson is recommended to ensure correct fastening and structural integrity.
Applications
- Windows
- Fitting
- Furniture
Standards & Compliance
- AS/NZS 1170 – Structural Design Actions (Wind, Earthquake, Snow Loads)
Environmental Benefits
- RoHS-compliant, ensuring reduced hazardous substances.
- Durable hardened steel construction extends product life, reducing waste.
Warranty Information
Warranty details available upon request from Wurth; typically covers manufacturing defects.
Available Now
The Wurth ASSY®plus 4 FBS RCS window construction screw is available for immediate purchase, ideal for window construction, fitting, and furniture applications.
