Trade Discount 20%
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 reliable fastening in window construction and furniture applications. Made from hardened steel and featuring a zinc-plated finish, this screw offers a full thread and raised countersunk head for gap-free installation. Ideal for professionals, it ensures optimal power transmission and stability, making it perfect for timber windows without the need for pre-drilling.
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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: 178744035
Alternatively Known As: Window construction screw, timber window screw, zinc-plated wood screw, raised countersunk head screw, full thread wood screw
Technical Specifications
- Material: Hardened steel
- Surface: Zinc plated
- RoHS-compliant: Yes
- Nominal diameter: 4 mm
- Length: 35 mm
- Head diameter: 7 mm
- Head height: 1.6 mm
- Internal drive: RW20
- Thread length: 25 mm
- Screw-thread length with drill tip: 28.5 mm
- Head type: Raised countersunk head with restraining ribs
- Thread type: Wood screw thread, full thread, single start thread
- Core diameter: 2.5 mm
- Tip shape: Drilling tip
- Min screw-in angle: 0 Degree
- Max screw-in angle: 90 Degree
- Suitable materials: Board ply wood (BSP), wood, derived timber products, 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 35mm x 7mm
- Weight: 0.002 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 with larger contact area at the bit.
- More stability, one-handed working, precise positioning due to 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 with lens-shaped, rounded head.
- Spring-loaded effect of restraining ribs prevents screw overturning and head damage.
- Maximum reliability due to asymmetrical single thread.
- Optimal matching of drill tip and thread geometry.
- Excellent anchoring in wood due to asymmetrical thread flanks.
- Small edge distances possible (3xd) due to wedge-shaped drill tip with parallel cutting edges.
- Assembly without gaps; wood does not split or rupture.
Professional Installation Requirements
- Professional installation recommended to ensure correct fastening and compliance with building standards.
Applications
- Windows
- Fitting
- Furniture
Standards & Compliance
- AS/NZS 1170 – Structural Design Actions (Wind, Earthquake, Snow Loads)
Environmental Benefits
- RoHS-compliant material ensures 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
Available for immediate purchase, ideal for window construction, fitting, and furniture applications.
