Self-Drilling Screws,5.5 x 130mm (Top Thread) 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. Self-Tapping Screws 5.5x 25mm 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. Self-Drilling Screws, 5.5 x 80mm (Full Thread) 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. Self-Drilling Screws, 5.5 x 50mm (Full Thread) 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. Please send us your price list based on minimum quantity