Timco C2 Exterior Strong-Fix Screws
Exterior structural wood screws designed for high corrosion resistance and reliable fixing in outdoor environments.
About Timco C2 Exterior Strong-Fix Screws
Timco C2 Exterior Strong-Fix Screws are structural wood screws engineered for outdoor use, offering enhanced corrosion resistance alongside the strength and drive control expected from the C2 range.
Finished with a silver organic multi-layer coating, these screws are designed to perform in harsh external environments where standard zinc-plated fixings may be unsuitable. They’re ideal for exterior timber construction where long-term durability, consistent fixing strength and resistance to moisture are essential.
Designed for Exterior Timber Applications
C2 Exterior Strong-Fix Screws are commonly used in outdoor and exposed timber projects, including:
- Decking and subframe construction
- Fencing and gate installations
- Exterior joinery and framing
- Ironmongery fixing into timber
- General outdoor structural timber work
They’re suitable for applications where fixings are exposed to weather, moisture and changing conditions.
Key Design Features
C2 Exterior Strong-Fix Screws combine proven Strong-Fix performance with enhanced protection for external use:
- Silver organic multi-layer coating with zinc base layer for increased corrosion resistance
- Tested to 1,000 hours salt spray resistance, suitable for harsh outdoor environments
- Patented Twin-Cut point for rapid pick-up and reduced timber splitting
- Dual-angle thread for strong holding power and excellent pull-out resistance
- Ribs under the head to improve countersinking and achieve a clean, flush finish
All sizes up to and including 75mm are fully threaded, while 80mm and above are partially threaded with a 70mm thread length, helping balance drive speed with fixing strength in thicker timbers.
Where Exterior Strong-Fix Fits in the C2 Range
C2 Exterior Strong-Fix Screws offer the same dependable structural performance as standard Strong-Fix, with the added benefit of enhanced corrosion resistance for outdoor use.
They’re the preferred choice where strength and durability are required in exposed environments, without moving into specialist stainless steel or marine-grade fixings.
Trusted Trade Fixings
Our C2 Exterior Strong-Fix Screws are supplied by Timco and selected for professional outdoor timber applications where long-term performance and reliability matter.
Browse our range to find the right Exterior Strong-Fix screw for your project.


