Self Drilling Screws Counter Sunk Head (CSK) Zinc Plated #8x1 (4.2x25mm), made in Taiwan, are durable and efficient fasteners designed for quick installation without the need for pre-drilling. Manufactured from high-quality steel with a zinc-plated coating, they offer strong resistance to corrosion and long-lasting performance. The countersunk head provides a neat, flush finish, making them ideal for metal, sheet metal, and general fixing applications. Supplied in a pack of 900 pieces, these screws are suitable for professional and industrial use where reliability and clean finishing are essential.