Self Drilling Screws Counter Sunk Head (CSK) Zinc Plated #8x3/4 (4.2x19mm), made in Taiwan, are high-performance fasteners designed for quick and easy installation without pre-drilling. Made from premium-quality steel with a zinc-plated finish, they provide excellent corrosion resistance and durability for long-term use. The countersunk head ensures a smooth, flush finish, making them ideal for metal, sheet metal, and general fixing applications. Supplied in a pack of 900 pieces, these screws are perfect for professional and industrial use where consistent performance and clean finishing are required.