[Weatherproof Epdm Washer] Each screw includes a 1/2 inch (13.8 mm) epdm rubber washer that expands under pressure to create a weather tight seal.
[Self Drilling Efficiency] Featuring a self drilling point that minimizes metal shaving and reduces preparation time these screws are equipped with galvanized asd coarse thread offering moderate rustproof ability.
[High Strength Durable Construction] These roofing screws are crafted from high strength carbon steel with a zinc plated finish ensuring robust toughness and long lasting durability.
[Comprehensive Package] This package includes 300 pieces of roofing screws and 1 hex driver bit offering for your projects.
[Superior Rustproof Protection] The baking varnish process provides exceptional rustproof ability and exterior protection for the 5/16 inch hex head.