Hillman 8-18 x 1-1/2 In. Hex Washer Head Self Drilling Screw is designed for easy and efficient fastening in thin gauge metal without the need for a pilot hole. These self-drilling screws feature a drill point on the end, allowing them to drill and fasten in one step, making your projects quicker and more convenient. I for sheet metal applications, they combine the strength of a hex washer head with the practicality of self-drilling technology to provide secure and reliable fastening every time. Model Number: