About Corroshield Screws - High-performance Zinc-plated Steel | Rust-resistant, Enhanced Durability, Versatile Applications 12x35 FT (Full thread)
The
Corroshield 12x35 (commercially designated as
12-14 x 35 mm) is a heavy-duty,
hex-head self-drilling roofing fastener. It features a
5.4mm thread diameter (12 Gauge) and an extended
35mm (1.4-inch) shank length. This longer length is explicitly engineered to handle applications requiring extra clearance, such as securing thicker crest profile roofing sheets or fastening metal insulation sandwich panels down to underlying steel purlins.