This 50-pack of specialist fasteners is specifically designed for the low-profile installation of Two-Part Joiner Bases and SUNGLAZE Bases onto metal subframes.

The standout feature of this screw is the “Supa Low” head design. In many glazing systems, the base profile must be secured to the metal rafter before a top cap or a polycarbonate sheet is snapped into place. Standard hex-head or pan-head screws often protrude too far, interfering with the secondary components or preventing the glazing panels from sitting flat. The ultra-slim head of this 12-gauge screw provides a nearly flush finish, ensuring that top covers and panels click into position without obstruction or “pivot points” that could lead to leaks.

Each screw is treated with a C3-rated coating, providing robust protection against corrosion. This makes them ideal for standard outdoor environments across the UK, offering significantly better weather resistance than standard zinc-plated screws. With a self-drilling tip, these fasteners are engineered to bite quickly into steel purlins and aluminium sections, reducing installation time and manual effort.

Key Features and Benefits

Ultra-Low Profile Head: Specifically designed to prevent interference with snap-on covers and glazing panels.
C3 Corrosion Protection: High-grade coating suitable for urban and industrial atmospheres with moderate salinity.
Self-Drilling Tip: Eliminates the need for separate pilot holes when fixing to light-to-medium gauge metal structures.
High-Torque 12-Gauge Strength: Provides superior shear resistance and clamping force for structural base profiles.
Clean Installation: Ensures the two-part joiner assembly sits perfectly square against the rafter.