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.
The new Torx flange head model introduces a completely new level of installation comfort
• Installation with an impact driver and socket or with a Torx bit – a separate washer is not always required
• Replaces traditional deck screws
• Significantly faster to install than conventional alternatives
• The flange provides high clamping force
• SmartFix tip, asymmetric thread and Ultra coating ensure speed and durability
Size range: Diameters 6–10 mm, lengths 40–200 mm, head diameter 12.5–17.5 mm
Suitable for:
Frames
Outdoor structures
Log constructions
Larger joints
Applications requiring fast and reliable clamping force
