Galvanised Wafer Phillips (PH3) Series 500 Fine Metal Self Drilling Screws

Galvanised Wafer Phillips (PH3) Series 500 screws are heavy-duty, fine-thread fasteners designed to drill through thick steel (typically 3mm to 12mm) in a single operation. Their low-profile wafer head provides an aesthetic, flush-like finish for applications like cladding, fencing, and general construction.

Key Specifications
Drill Capacity: Engineered for heavy-duty metal-to-metal fixing, capable of penetrating mild steel up to 12mm thick without pre-drilling.
Head Type: Wafer Head with a Phillips PH3 drive, requiring a PH3 driver bit for high-torque installation.
Thread: Fine Thread (24 TPI) for superior clamping force in thick base materials.
Finish: Galvanised, providing high corrosion resistance for both internal and external use.
Installation Speed: Recommended maximum drill speed of 2500 RPM to prevent tip burnout during heavy drilling.