Our self-drilling screws are ideal for fastening metal to wood in roofing and metal building applications quickly, but securely. Self-drilling screws are a type of self-tapping screws which are threaded fasteners that drill their own hole and thread it as they are installed. Each screw is made with a Micro-Bit point that acts as a drill bit, one that can consistently drill single or multiple thicknesses of high-strength steel panels. This “drill bit” also requires less end pressure to penetrate metal surfaces and engage the wood.