Corrosion-resistant C4/C5 structural screws for
demanding outdoor and indoor applications
The screws are CE marked, and ETA approved (ETA-12/0471), ensuring their suitability for load-bearing structures. The innovative Ultra double coating provides a high level of
corrosion resistance in corrosivity categories C4 (VH) / C5 (H).
The Ultra C4/C5 range is designed for professional builders who demand reliable performance, long service life and easy installation from their fasteners.
Fast and effortless installation
The SmartFix tip of Ultra screws bites immediately into the wood, eliminating the need for pre-drilling. The asymmetric thread and integrated milling ribs along the shank reduce the required driving torque, saving battery power and reducing strain on the installer. The installation process is faster and smoother, while the internal Torx drive ensures excellent bit grip and controlled fastening.
A classic structural wood screw that sinks neatly into the wood
The ribs under the head countersink the screw cleanly flush with the wood surface, resulting in a neat and finished appearance.
• Ultra coating
• SmartFix tip and coarse thread
• Asymmetric thread and milling ribs on the shank
• Internal Torx drive
Size range: Diameters from 4.5 mm up to heavy-duty 8.0 mm screws, lengths up to 240 mm
Suitable for:
Structural framing
Log constructions
Decking
General fastening
Indoor and outdoor structures
