Self Drilling Screws Hex Head with EPDM Washer Zinc Plated #14x4 (6.0x100mm), made in Taiwan, are heavy-duty fasteners designed for fast and secure installation without pre-drilling. Manufactured from high-quality steel with a durable zinc-plated finish, they offer excellent corrosion resistance and long-lasting performance. The hex head ensures easy driving with strong grip and torque control, while the EPDM washer provides a reliable watertight seal, making them ideal for roofing, cladding, and outdoor applications. Supplied in a pack of 135 pieces, these screws are suitable for professional and industrial use where strength, durability, and weather protection are required.