EXCLUSIVE Otter Roofing & Cladding Timber Screws 12g x 30mm Pack of 500 Galvanised SKU: 231685 MODEL: TING12305 Error. try again later You've successfully joined the club $ 94 .83 pack of 500 Mitre 10 MAvailable at Mitre 10 MEGA stores. Variants Suitable for outdoor use fixing to timber. Mechanical galvanising to class 3. Features and benefits Hex flanged head with EDPM washer. Self-drilling type 17 point. Coarse thread for use in lighter density materials.