Self-Drilling Screws BZP Countersunk - 3.5 x 16mm (No. 6 x 5/8") - Pack of 500

TRUE SELF-DRILLING FUNCTION: Hardened No. 2 drill point creates its own hole and thread in one operation, saving up to 50% installation time-no pre-drilling or pilot holes required for light-gauge steel/metal (1.2mm - 3.5mm capacity). FLUSH COUNTERSUNK FINISH: Features a precision-engineered countersunk head that sits perfectly level with the material surface, providing a neat, professional, snag-free finish ideal for aesthetic applications and component mounting. DURABLE CORROSION RESISTANCE: Coated with Bright Zinc Plating (BZP) for exceptional durability and protection against rust and corrosion, ensuring a long-lasting and reliable fixture for indoor and sheltered outdoor use. HIGH-STRENGTH GRIP: The aggressive coarse thread and carbon steel material (C1022 Hardened) provide excellent holding power and high pull-out resistance when fixing metal sheets, window frames, or timber to light steel. VERSATILE MULTI-MATERIAL FASTENER: Essential for window and door installation, HVAC ductwork, metal roofing, steel cladding panels, securing timber battens, and general fabrication projects; uses a common Phillips PH2 drive.