Cement Board Screws – Timber – Thin Sheet Metal – Box 200

Cement board to timber screws need to work harder than a standard drywall screw. They have to deal with abrasive board material, the need for a flush finish, and often a damp or corrosive environment. These 4.2 x 25mm screws are built specifically for that job, fixing cement board to timber substrates and thin sheet metal up to 0.6mm thick.

The self-countersinking head has ribs underneath that cut cleanly into the board surface as the screw drives home, pulling flush without the need for pre-countersinking. It is a small detail that saves time across a full install.

What Makes These Cement Board Screws Different

The twin-cut point is designed for rapid pick-up and reduced torque through the drive. That means less effort per screw, less risk of cam-out, and a quicker fix overall. If you are running a full board installation, that adds up. The hi-low thread gives strong holding power in both timber and the board itself, keeping the fix tight and reducing any chance of pull-through over time.

Corrosion resistance is where these pull ahead of standard fasteners. The exterior-grade organic plating is rated to 1,500 hours in a salt spray test, making them a genuine option for facades, wet rooms, external sheathing and anywhere moisture or humidity is a regular presence. They also carry a Fire Classification of A1, which matters on projects where fire performance documentation is required.

Supplied in a box of 200, these are a practical trade quantity for a single room fit-out or as a working stock supply. At this price point, it makes sense to keep a box in the van.