STITCHING SCREWS GALVANISED BUTTON PHILLIPS HEAD

Key Features and Materials

Head Type: Button head (also known as a wafer head) is low-profile with a flat underside and wide bearing surface, which distributes the load to prevent pull-through and creates a neat, aesthetically pleasing finish.
Drive Type: Phillips drive (typically PH2) for easy installation using standard power tools or screwdrivers.
Point: Self-drilling needle point (often T17 for timber applications or a reduced point for metal) that can pierce light gauge metal (up to 1mm) without the need for pre-drilling pilot holes.
Thread: Often features a coarse thread and tapered shaft that helps draw the two materials together for a strong, secure grip.
Material/Finish: Galvanised coating (e.g., Class 3 or Class 4) provides good corrosion protection, suitable for most outdoor, external, and wet-area applications. 

Typical Applications
Joining Overlapping Metal Sheets: These are specifically designed to "stitch" or bind together overlapping metal panels, such as those found in roofing, cladding, gutters, or flashing joints, to ensure a weatherproof seal and enhance wind resistance.
Fixing Timber to Light Gauge Steel: They are a versatile option for applications where timber needs to be fastened to a thin steel substrate.
General Construction: Used for a broad range of light-duty and general DIY projects, including securing electrical fittings, signs, and foil insulation/sarking.