C2 Deck-Fix Cylinder Head Decking Screws – Exterior & Stainless Steel

The C2 Deck-Fix Exterior Screw is made for clean, secure decking installs. Whether you're using timber or composite boards, this screw gives you a tight, flush finish and serious holding power.

The slim cylinder head sits just below the surface, keeping the top of your boards clean and tidy. Its patented twin-cut tip means it starts quickly, drives easily, and helps avoid splitting – especially useful when working close to edges or using dense materials. The upper thread pulls the board down tight to the joist, helping prevent any lifting or movement over time.

✔ Flush finish – slim head hides neatly in the board
✔ Upper thread clamps boards to the joist
✔ Twin-cut tip – fast starting, split-free fixing
✔ Torx (TX) drive head – less slipping, better control
✔ Green coating – corrosion resistant, built for the outdoors
✔ Ideal for timber or composite decking

What is a Twin-Cut Tip?
This patented screw tip is built to save time and reduce timber damage:

• The first cut grabs instantly – no skating across the board.
• The second cut clears the path, helping the screw drive in smoothly and reducing the chance of splitting timber or composite boards.

Result: faster installs, cleaner finishes, and less faff.

Choosing the Right Finish
There are two versions of the C2 Deck-Fix screw – pick the one that suits your site:

• Exterior (Green Coated): This version has a specialist coating that stands up to the weather. Great for general outdoor use – garden decks, raised platforms, and composite installations.
• Stainless Steel (A2): Best choice for coastal areas or very wet environments. Made from stainless steel through and through, with no coating to wear off – just solid rust resistance.

How to Use C2 Deck-Fix Cylinder Head Decking Screws

• Pilot holes? Usually not needed for softwood. For hardwood or boards near the edge, a small pilot helps prevent cracking.
• Use a Torx bit (TX drive) – it locks in well, reduces cam-out, and makes screwdriving smoother with less pressure.
• Drive flush: The reduced head is made to disappear into the board for a clean, snag-free finish.
• Clamp down tight: The upper thread grips the deck board and pulls it firm to the frame – no gaps, no movement.

Why Buy C2 Deck-Fix Cylinder Head Decking Screws from Fast Fixings Online?

When you buy your C2 Deck-Fix Screws from Fast Fixings Online, you’re getting more than just great fixings. We offer free next working day delivery on orders over £85, so your materials arrive when you need them. You can create a free account to save time on repeat orders, and if you join our VIP Rewards Club, the more you spend, the more you save. It’s our way of giving something back to loyal trades and customers who keep coming back.