The 10 in. x 1 in. roofing screws are specifically designed for fixing thin-gauge metal plates under 2.4 mm to wooden structures. Constructed from high-strength alloy steel, these screws offer excellent toughness. An additional magnetic-absorbing driver bit is included for convenient operation. The self-drilling tip of the screws reduces metal shavings during installation. The galvanized ASD coarse threads exhibit moderate corrosion resistance when used with wood. With a wide range of applications, these screws are mainly suitable for connecting most iron panels, steel plates, aluminum panels, wood, plastic sheets, composite boards, and more. The 1/2 in. (13.8 mm) EPDM rubber washers expand under pressure to form a durable weather-tight seal. Their suitable diameter closely covers the screw holes, effectively blocking wind and rain from entering. The 5/16 in. hex heads are treated with a baking varnish process, providing superior corrosion resistance and exterior protection. The high-torque drive design facilitates easy installation.