12-11x35-75 CL4 T17 Hex Head Screw

Product Overview
This product is a dedicated fastening screw for timber structure engineering, adopting a 12G thick shank and 11‑thread coarse thread, with lengths from 35 to 75 mm. The hex flange head is combined with a T17 wood cutting point, and the surface is coated with a CL4 Grade 4 anti‑corrosion coating. The heat‑treated carbon steel substrate allows fastening into various timber types without pre‑drilling, making it suitable for outdoor and highly corrosive environment wood construction.

Product Applications
Outdoor Preservative‑treated Timber Projects: Fixing decks, boardwalks, fences, cabin exterior walls, and treated timber flooring.
Steel‑Timber Composite Construction: Light‑gauge steel framing with wood backing, roof purlins, and timber frames for sunrooms.
Interior Woodwork Infrastructure: Timber joists, integrated panels, wooden ceilings, and shelving frames.
Highly Corrosive Environments: Fastening timber structures in coastal beachfront cabins and humid industrial areas.