Product Overview
This T17 hex head self‑tapping screw, available in sizes 14–10×65–150mm, is cold‑headed in one piece from high‑quality carbon steel. It features a T17 cutting point at the tip and a coarse 14# thread with 10 threads per inch. The surface is treated with a silver Dacromet anti‑corrosion coating, providing neutral salt spray resistance up to 1,000 hours for long‑term rust protection. The screw comes with an integral hexagon flange head that incorporates a built‑in sealing load‑bearing flange washer. With lengths covering 65mm to 150mm in multiple specifications, it is suitable for both thin panel fastening and thick multi‑layer wood‑steel composite structure connections, making it a heavy‑duty fastening accessory specifically designed for outdoor construction, light‑gauge steel timber buildings, and metal enclosure projects.
Product Applications
Light‑gauge steel and timber structures: joining and fixing wooden wall frames, roof purlins, preservative‑treated timber decking, and wood‑steel composite load‑bearing beams;
Metal roofing and enclosure projects: fastening profiled steel sheets in steel‑structure workshops, sunroom frames, and exterior metal wall cladding;
Exterior wall insulation and cladding systems: installing external wall insulation layers, decorative insulated panels, and outdoor wall cladding;
Photovoltaic outdoor installations: connecting galvanized PV mounting brackets to timber bases and steel‑wood composite supports;
Highly corrosive outdoor environments: fastening steel and timber structures in coastal scenic areas, docks, open‑air workshops, and other high‑humidity, salt‑spray‑prone conditions.
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