Self-drilling screws ULTRADURO coated (to withstand 1,000 hours of salt spray test), Drill point no.3, preassembled to 19mm Galvanized Washer Bonded to 3mm thick grey EPDM seal 5.5 x 130mm (Top Thread) 5.5 x 80mm (Full Thread) 5.5 x 50mm (Full Thread) Minimum order quantity Self-Tapping Screws ULTRADURO Coated (to withstand 1,000 hours of salt spray test), Type A (Pointed End) preassembled to 19mm GI Washer Bonded To 3 mm Thick Grey EPDM seal 5.5x 25mm Minimum order quantity