Cross Recess Countersunk Head Self-Drilling Screw with Wing 10X45-55 CL3

Product Overview
This product is a 10#, 45/55mm specification countersunk head self-drilling screw with wings, formed by carbon steel heat treatment, with a CL3 mechanical zinc plating anti-corrosion coating on the surface. It integrates the countersunk head, break-off wing reaming, and self-drilling point structures into one unit, specifically designed for wood + thin light-gauge steel composite connections. It requires no pre-drilling and completes drilling and fastening in a single operation, with the screw head fully embeddable into the panel, balancing fastening strength and appearance, suitable for humid indoor and outdoor moderate corrosive environments.

Product Applications
Light steel timber houses: Fixing of wooden battens, wooden beams, and light steel keel frameworks;
Outdoor woodworking: Installation of treated wood exterior walls, decking boardwalks, and wood sheathing boards with steel purlins;
Indoor commercial projects: Fixing of light steel keels for wooden suspended ceilings and solid wood wall panels;
Steel-wood components: Connection of wooden door/window auxiliary frames, canopy wooden beams, and galvanized steel brackets.