C2 Deck-Fix decking screws are engineered for strong, reliable fixing in exterior timber applications. This 4.5mm x 85mm size is well suited to thicker decking boards, structural timber, and outdoor construction where increased penetration and holding strength are required.

Each screw features a patented twin cut point that delivers fast pick-up and helps reduce timber splitting, even when working close to board edges. The strengthened head is designed to resist shearing when used with impact drivers, while ribs under the head improve countersinking for a clean, flush finish.

A helix shank helps clear debris during driving and improves clamping between boards. The green organic coating provides multi-layer corrosion protection and is tested to withstand up to 1,000 hours salt spray, making these screws suitable for demanding outdoor environments.

Key Features

• Green organic coating for exterior timber use

• Twin cut point for fast starts and reduced splitting

• Strengthened head to resist shearing with impact drivers

• Ribs under the head improve countersinking and finish

• Helix shank aids debris removal and clamping

• Tested to 1,000 hours salt spray for corrosion resistance

FAQ's

What is the 4.5mm x 85mm Deck-Fix screw best used for?
This size is ideal for thicker decking boards, fencing rails, and exterior timber where deeper fixing and higher holding strength are needed.

Are these screws suitable for outdoor use?
Yes. The green organic coating is corrosion resistant and tested to withstand 1,000 hours salt spray, making them suitable for exposed outdoor conditions.

Do these screws reduce timber splitting?
Yes. The twin cut point helps reduce splitting and allows for quicker pick-up, even near edges.

Can these be used with impact drivers?
Yes. The strengthened head is designed to withstand impact driving and reduce the risk of shearing.