TIMco C2 Clamp-Fix Multi-Purpose Screws - 4.0 x 30mm - Yellow

You will need a TX20 driver bit. This is a Torx-compatible bit of a specific size.

Yes, the high-molecular polymer coating provides rust protection up to 20 times longer than standard zinc plating, making them suitable for many exterior applications, especially when protected from direct, prolonged water exposure.

Timber jacking occurs when screws push timber upwards as they are driven, creating gaps. The C2 Clamp-Fix screws are designed with specific features in their thread and tip to counteract this, drawing the timbers together securely.

These screws are specifically engineered and optimized for timber-to-timber applications. Their performance with other material combinations may vary and is not guaranteed.

The dual-angle thread provides superior pull-out resistance and enhanced clamping performance, ensuring a stronger and more durable connection between timber components.

A box of TIMco C2 Clamp-Fix screws, 4.0 x 30mm, contains 200 screws.

The ribs under the head are designed to help the screw countersink smoothly and flush into the timber surface, providing a cleaner aesthetic finish without damaging the surrounding wood.

Ensure you are using a correct-sized TX20 driver bit and that it is fully engaged in the screw recess. Apply firm, consistent pressure directly along the axis of the screw.

While designed to minimize splitting, ensure you are not driving the screw too close to the edge of the timber. For very hard woods, a small pilot hole may still be beneficial, though often unnecessary.

Verify you are using a TX20 bit. Check that the timber is not unusually dense. Ensure the screw tip is engaging properly with the timber surface.

Apply more downward pressure as the screw head nears the surface. Ensure the pilot hole (if used) is not too large. The under-head ribs are designed for optimal performance with standard timber.