The Teks #10 x 1-1/2 in. Zinc-Plated Steel Washer-Head Hex Self-Tapping Drill-Point Screws (90-Pack) helps you fasten metal to metal. The steel screw is ideal for use with metal of a thicker gauge. Drill point and flute remove material and size holes for threads. Install using a standard screw gun (not included) and a 5/16 in. hex drive bit (not included). No pre-drilling required.