5.2mm x 63mm Countersunk Self-Drilling Composite Decking Screws, 350 Pack

These 5.2mm x 63mm countersunk self-drilling screws are specifically engineered for fastening modern composite polymer and timber decking boards. Designed to overcome the common mushroom effect caused by standard wood screws, they ensure a clean finish without displacing material around the head. This 350 pack is an essential component for contractors and DIY enthusiasts working with new generation decking materials. The saddle brown colour-coated heads are designed to blend seamlessly with your chosen board colour.

These fasteners are suitable for a wide range of outdoor applications across the United Kingdom, from domestic garden patios to high-traffic commercial walkways. You can use them to secure boards on raised timber platforms or low-level garden paths that require a stable, low-profile connection. They perform reliably in damp British climates, making them ideal for poolside areas or public ramps where moisture is constant. Whether you are renovating a residential terrace or installing decking in a professional landscaping project, these screws provide the necessary strength for long-term durability.

Installation is straightforward because the self-drilling tip eliminates the need for pre-drilling into the boards. This feature significantly reduces labour time during large-scale garden builds or commercial installations. To ensure a secure fit, use a driver compatible with the anti-strip Torx TTAP drive system, which prevents cam-out during high-torque applications. Simply drive the screw directly through the composite board and into the supporting joist to achieve a flush, professional finish every time.

Each pack contains 350 individual screws measuring 5.2mm in diameter and 63mm in length. The saddle brown heads feature an anti-fade paint coating to maintain their appearance over time. These screws are treated to resist corrosion from ACQ and copper azole wood treatments, ensuring they remain effective in treated timber environments. The Torx TTAP drive system is integrated into the head design to provide maximum grip during the fastening process.