Timco Metal Const H/S EPDM Washer Hex S/D Screw 5.5 x 80mm PK100 is a premium-grade, self-drilling metal fixing designed for superior performance in construction, roofing, and cladding projects. Made from high-tensile, corrosion-resistant steel, these screws deliver exceptional strength and reliability in demanding environments. The hex head design ensures secure torque control and stable fastening, while the bonded EPDM washer provides a watertight seal to prevent leaks and rust. Its self-drilling tip eliminates the need for pre-drilling, saving time and ensuring clean, accurate penetration through metal surfaces. Ideal for professional contractors, these screws guarantee a secure, weatherproof, and long-lasting hold.