INDEX A PERFECT FIXING INDEX A2 Stainless Steel Self Drilling Screws 4.2 x 19mm - 500pk

The INDEX A PERFECT FIXING RSA24219 screws provide a professional solution for aluminium joinery and sheet metal mounting. Made from durable A2 stainless steel, these 4.2 x 19 mm fasteners feature a self-tapping thread and a built-in drill tip, allowing you to drill through metal thicknesses from 0.70mm to 4.40mm without needing pilot holes. The extra flat head design is specifically engineered to prevent interference with moving elements and can serve as a reliable replacement for rivets. Designed for a clean finish, the head geometry includes a cone between the thread and head to ensure a perfect fit, while the ball shape helps keep the screw hidden after installation. This box of 500 screws is ideal for connecting heavy profiles to sheet metal with precision and ease.