Description
Fencing Screws for Steel Frames – AnchorMark S2-TTM DELTA® SEAL
Achieve a clean, secure finish for your fencing, screening, or cladding with these high-performance timber-to-metal screws. Designed for steel substructures, they deliver strength, speed, and a professional look.
Built for Steel Subframes
These screws feature an aggressive self-drilling tip with wings, making installation fast and efficient.
- No pre-drilling required
- Suitable for steel thickness 1.25 mm to 3.0 mm
- Cuts a clearance hole through timber and drills into steel
- Saves time on site
Durable DELTA® SEAL Coating
Made from carbon steel with DELTA®-SEAL coating, these screws offer reliable corrosion protection for general outdoor use.
- High resistance to weather and corrosion
- Increased fracture torque for strength
- Ideal where stainless steel is not required
⚠️ Note: Not suitable for coastal areas, around pools, or harsh environments. For those conditions, use 316 stainless steel screws.
Smooth Driving & Strong Hold
The SIT® drive (TX compatible) ensures consistent performance and a tight fit.
- Excellent torque transfer
- Fast centring for quick installation
- Reduced cam-out
A high-efficiency thread with anti-friction coating helps reduce drive-in torque for smoother driving.
Clean, Professional Finish
Designed for visible applications where appearance matters.
- Small head diameter for a neat, flush finish
- Smooth head – no sanding required after install
- Helps prevent timber tearing or splitting
Available in silver, brown, and black to suit your project.
Ideal Applications
- Timber fencing on steel frames
- Screening and feature panels
- Cladding fixed to steel substructures
Important Load Information
- Maximum tensile capacity: 1kN per fixing point
- Maximum shear capacity: 8kN per fixing point
Always ensure your application stays within these limits. If unsure, consult a qualified engineer.
Pro Tip
Avoid harsh chemical cleaners on timber, as they may damage the screw coating. Wash off any residue to maintain performance and appearance.
Why Choose AnchorMark S2-TTM Screws?
- Designed for timber to steel fixing
- Fast install with self-drilling tip
- Durable DELTA®-SEAL coating
- Clean, flush finish with no sanding
- Multiple colours to match your project
Reliable, efficient, and built for everyday outdoor projects.
These fencing screws make steel frame installs quicker and cleaner.





