C2 Tongue-Fix Reduced Countersunk Tongue Groove Flooring Screws – 3.5 x 45mm – Box 200

C2 tongue and groove screws are purpose-built for fixing tongue and groove floorboards and wall panelling where a concealed, flush finish is the only acceptable outcome. The reduced countersunk head is sized to sit neatly inside the tongue, completely out of sight once the next board slides into place. No plugging, no surface fixings, no mess.

The plain shank is a key part of how these work. As the screw drives home, it pulls the two boards tightly together without you having to clamp or hold them in position. That alone saves a lot of faffing about on a large floor installation.

What Makes C2 Tongue and Groove Screws Different

C2 screws are made to a noticeably higher standard than standard flooring screws. The dual-angle thread gives excellent pull-out resistance, which matters when boards are under the kind of foot traffic a floor takes over years. The patented twin-cut point bites quickly and cleanly into the timber, reducing the chance of splitting, particularly in harder or drier boards where a standard screw point would cause problems.

The polymer lubricant coating is worth knowing about. It reduces the torque needed to drive each screw by up to 52%, which means less wear on your driver bits and noticeably less effort over a full room. It also provides rust protection up to 20 times greater than standard zinc plating, so if any moisture gets into the floor, the screws are not going to be the thing that lets you down.

A Practical Note on Pack Size

A box of 200 is a sensible quantity for most domestic or light commercial flooring jobs. For larger projects, it is worth buying in multiples to keep a consistent batch of the same screw specification throughout the job.