TIMco C2 Tongue-Fix Flooring Screw - Yellow - 3.5 x 45mm

The high-molecular polymer lubricant coating significantly reduces insertion torque by up to 52%, making it much easier and faster to drive the screws, reducing user fatigue.

In most cases, pre-drilling is not necessary due to the innovative twin-cut point. However, if you encounter very hard or brittle timber, a small pilot hole may be beneficial to prevent splitting.

'Tongue-Fix' refers to the screw's specific design for fastening tongue and groove joints, ensuring a secure and often concealed connection suitable for flooring and panelling.

The advanced coating provides rust protection lasting up to 20 times longer than standard zinc plating, offering superior longevity and performance in various environments.

You will need a TX10 driver bit to properly engage with the screw's recess.

While optimized for tongue and groove flooring and panelling, their performance characteristics like reduced torque and high pull-out resistance could make them suitable for other timber-to-timber applications where a concealed head is desired, provided the timber type is compatible.

The plain shank section above the threads pulls the mating boards together as the screw is driven, effectively clamping the joint without the need for manual clamps in many situations.

Ensure you are using the correct TX10 driver bit and that it is fully engaged. Check for any obstructions or damage to the timber. Confirm the drill/driver is set to an appropriate speed and torque setting.

While the twin-cut point minimizes splitting, very brittle or knotty timber might still be susceptible. Try reducing the driving speed slightly. If issues persist, consider a small pilot hole in extremely difficult wood sections.

Ensure the timber around the screw hole is clear of debris. The reduced head design should countersink; if not, the hole may be too shallow, or the timber may be too hard. A slight countersink bit can be used if necessary for a perfectly flush finish.

Verify the screws are driven into a solid substrate (e.g., joists or solid subfloor). Ensure the threads are fully engaged in the material providing the support. The dual-angle threading is designed for high pull-out resistance, so poor holding usually indicates an issue with the base material.