Hillman 1/4-14 X 2-1/2 In. Hex Washer Head Self Drilling Screw is designed for efficient fastening in thin gauge metal without the need for a pilot hole. Featuring a drill point at the end, this self drilling screw combines the convenience of a sheet metal screw with the added ability to drill through metal surfaces, making installation quicker and easier. I for a variety of metalworking applications, it provides reliable performance and secure fastening with its hex washer head design. Model Number: