TIMco C2 Clamp-Fix Multi-Purpose Screws - 5.0 x 80mm - Gold

The coating offers superior rust protection compared to standard zinc, but they are primarily designed for timber-to-timber construction; check local building codes for specific exterior structural requirements.

In most standard softwood applications, the twin-cut point allows for direct driving without a pilot hole.

These screws use a standard TX drive recess; use a matching TX bit size for the best fit and to prevent damage to the screw head.

No, these are strictly timber-to-timber screws and are not designed to expand or grip in masonry or concrete.

The ribs are designed to cut into the wood, allowing the head to sit flush without the need for a separate countersinking bit.

Ensure the drill speed is steady and the screw is not being driven at an angle; check that the debris under the head is cleared.

Verify that you are using the correct size TX driver bit and that the bit is fully seated into the screw recess before applying torque.

While the twin-cut technology prevents this, for very dry or thin timber, consider drilling a pilot hole approximately 70% of the screw diameter.