The 5.5mm Hex Self Driller with EPDM Washer is an innovative fastening solution designed for efficient installation and optimal sealing. Featuring a durable self-drilling tip, this screw eliminates the need for pre-drilling, allowing for quick and easy installation in various materials, including metal and wood. The 5.5mm hex head provides a secure grip for easy tightening, ensuring reliable performance. Accompanied by an EPDM washer, this screw offers superior resistance to moisture and environmental factors, making it ideal for outdoor applications where sealing is critical.