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B&Q£5.44Visit shop B&Q - Pozidriv Double Self-Countersunk Yellow-Passivated Steel Wood Screw (Dia)4mm (L)25mmPack Of 100
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The TurboDrive Pozidriv Wood Screw is designed for both DIY enthusiasts and professional carpenters looking for a reliable, high-quality fastener for timber-based construction. These 4mm x 25mm screws offer excellent holding power and a clean finish thanks to their double countersunk head, though users should ensure they are using the correct Pozi-drive screwdriver bit to prevent cam-out during installation.
| Colour | Yellow |
|---|---|
| Brand | TurboDrive |
These screws require a PZ2 Pozidriv screwdriver bit.
They feature a yellow-passivated finish which provides some corrosion resistance, but they are primarily designed for indoor use or protected, dry exterior environments.
While these screws are designed to bite easily, pre-drilling is recommended for hardwoods or when working close to the edge of the wood to prevent splitting.
These screws are 25mm in length and have a 4mm diameter.
This pack contains 100 individual screws.
While it may fit, it is strongly advised to use a Pozidriv (PZ) bit to avoid cam-out and damage to the screw head.
Ensure you are using a PZ2 Pozidriv bit and applying firm, steady forward pressure while driving.
Pre-drill a pilot hole slightly smaller than the 4mm screw diameter to reduce internal stress on the timber.
Countersink the entry hole slightly or increase the torque on your drill to drive the head deeper.
To achieve the best results, use a compatible PZ2 driver bit. Ensure your power drill is set to a low-to-medium torque setting to avoid stripping the wood fiber or the screw head. While the yellow-passivation offers a protective layer against corrosion, it is recommended to keep these screws in their original packaging in a dry environment to maintain their finish. When installing, always maintain consistent pressure until the screw is fully seated to ensure a tight, structural bond.
