The Bi-Metal Self-Drilling Screw is designed for metal roofing, corrugated roof mounting, trapezoidal sheet metal roof mounting, solar panel mounting, and other construction fastening applications. It combines a stainless steel screw shank with an alloy steel drill point to support corrosion resistance, drilling performance, tapping performance, and fast installation.

This screw can drill, tap, and fasten in one operation, helping improve installation efficiency when fastening through hard metal sheets. The strong welding point and straight shank design support stable drilling performance and reduce the risk of twist or breakage in the demonstrated comparison.