TIMco C2 Clamp-Fix Multi-Purpose Screws - 8.0 x 150mm - Yellow

The primary advantage is their patented twin-cut technology and dual-angle threading, which work together to reduce timber splitting and provide superior clamping force and pull-out resistance in timber-to-timber applications.

Generally, pre-drilling is not necessary due to the self-drilling twin-cut point. However, it may be beneficial in very hard or brittle timber, or when precise positioning is crucial.

You will need a TX40 driver bit. Using the incorrect bit size or type can lead to cam-out and damage to the screw head.

They feature a high-molecular polymer coating that provides rust protection up to 20 times longer than standard zinc plating, making them suitable for durable applications.

Timber jacking is when timber lifts or splits as a screw is driven. The C2 Clamp-Fix screws are engineered to prevent this through their thread design and twin-cut point, ensuring a more controlled and stable fastening process.

These specific screws are 8.0mm in diameter and 150mm in length.

Each box contains 50 screws.

Ensure you are using a genuine TX40 driver bit that is fully engaged with the screw head. Check that the driver bit is not worn. Reduce driving speed and apply firm, consistent pressure.

While the twin-cut point minimizes splitting, extremely dense or brittle timber may still be susceptible. Consider a pilot hole in such cases, especially near the edge of the timber.

Verify that you are using the correct TX40 driver bit. Ensure your drill/driver has sufficient power and torque. The polymer coating should reduce friction; if it seems ineffective, check for any debris on the screw threads.

The ribs under the head should facilitate countersinking. Ensure you are not over-driving the screw. If the timber is very soft, the head might sink too deep. Adjust torque settings or consider a screw with a different head type if flush finish is critical in very soft timber.