The Tapping Steelbinder Metal Roofing Screw is designed for superior performance in securing metal roofing panels and siding to steel structures. Perfect for residential, agricultural, and industrial projects, these screws offer strength, reliability, and ease of installation. With a sharp tapping tip, they eliminate the need for pre-drilling, while the integrated EPDM rubber washer ensures a watertight and corrosion-resistant seal for long-term durability. Featuring a #17 Diameter and a 5/16" HWH design, these screws come with an EPDM bonded sealing washer that provides maximum pull over strength in high wind uplift applications. The EPDM rubber & HH with EPDM bonded sealing is vulcanized to a steel washer to form an excellent seal and will cover any existing hole to prevent leaks from re-occuring.