Self Drilling Screws Counter Sunk Head (CSK) Zinc Plated #6x1 (3.5x25mm), made in Taiwan, are high-quality fasteners designed for quick and efficient installation without the need for pre-drilling. Manufactured from durable steel with a zinc-plated finish, they provide excellent corrosion resistance and long-lasting performance. 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 suitable for professional and industrial use where reliability and clean finishing are essential.