EXCLUSIVE Otter Roofing & Cladding Timber Screws 12g x 65mm Pack of 250 Galvanised SKU: 231706 MODEL: TISG12657 Error. try again later You've successfully joined the club $ 99 .98 pack of 250 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. Split coarse thread used in roofing screws to secure roofing material to the screw head.