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B&Q£5.15Visit shop B&Q - Pz Double-Countersunk Yellow-Passivated Carbon Steel Multi-Purpose Screw (Dia)4mmPack Of 200
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The TurboGold Multipurpose Screw (4mm x 20mm) is designed for DIY enthusiasts and trade professionals who require a reliable, durable fastener for diverse wood-based projects. Featuring a double-hardened core and a specialized yellow finish, these screws offer excellent structural integrity and superior corrosion resistance, though they are specifically optimized for wood applications and may not be suitable for masonry or metal surfaces without pilot holes.
| Colour | Yellow |
|---|---|
| Brand | TurboGold |
Yes, the yellow finish is specifically treated for improved corrosion resistance, making them suitable for many outdoor applications.
While often not necessary for softwoods, a pilot hole is recommended for hardwoods or when driving close to the edge of the wood.
It refers to the shape of the screw head, which allows it to pull neatly into the wood so the top sits flush with the surface.
These are designed primarily for wood. Using them on metal may strip the threads or damage the screw coating.
These specific screws are 20mm in length.
Ensure you are using the correct size driver bit and apply consistent, firm downward pressure while driving.
Use a smaller drill bit to create a pilot hole before driving the screw, especially near the end of the wood grain.
Check that the screw is not hitting a knot or a hidden metal object; ensure your drill is set to the correct torque setting.
For optimal performance, ensure you are using a compatible PZ or Phillips drive bit that fits snugly into the screw head to prevent cam-out. While the screws are designed to drive into wood easily, using a pilot hole is recommended when working near the edges of a board or with extremely dense hardwoods to prevent splitting. To maintain the life of the screws in high-moisture environments, avoid using damaged or stripped screws, as any compromised coating may allow rust to form. Always store these in a dry container to preserve the yellow finish.
