TIMco C2 Clamp-Fix Multi-Purpose Screws - 8.0 x 120mm - Yellow

Timber jacking is when the wood being fastened is pushed upwards by the screw's thread as it enters, creating a gap. The C2 Clamp-Fix screws use patented twin-cut technology which lifts and removes timber shavings during insertion, preventing this upward pressure and keeping the joint tight.

The high-molecular polymer lubricant coating can reduce insertion torque by up to 52%. This translates to faster driving times and less user fatigue, especially on large projects.

The dual-angle thread provides a combination of aggressive bite into the timber for grip and a strong hold against pull-out forces, ensuring the connection remains secure and stable over time.

Yes, the screws offer up to 20 times longer rust protection than standard zinc plating, making them suitable for outdoor applications like decking, fencing, and garden structures. However, for extreme environments, additional protection like timber sealants is recommended.

These 8.0 x 120mm screws utilize a T40 TX drive recess. Using the correct size bit ensures proper engagement and prevents cam-out.

No, these screws are specifically designed and engineered for timber-to-timber applications only. They are not intended for use with metal or other materials.

This indicates that the product is sold in boxes containing 50 screws of the specified size (8.0 x 120mm).

Ensure you are using the correct T40 TX driver bit and that it is fully engaged. Check that the timber is not excessively hard, and consider a small pilot hole if necessary. Verify the lubricant coating is intact.

While the twin-cut technology minimizes splitting, very brittle timber might still be affected. Ensure the pilot hole (if used) is the correct size. Drive the screw straight and avoid over-tightening, which can stress the timber.

Confirm the under-head ribs are making contact with the timber. Ensure you are using sufficient driving pressure to allow the ribs to countersink. If the timber is very soft, the head may sink further than desired; stop driving once flush.

Although rated for enhanced protection, prolonged exposure to harsh, damp environments without sealant can eventually affect any fastener. Ensure screws are installed in a reasonably dry state and consider appropriate timber sealants for exposed applications.