This is an OEM part sourced directly from the manufacturer. The screw is designed for use in Craftsman drills. This part is made of metal, and is generally used in securing the drill chuck that holds the bit. Please be aware that there are different screws used in the machine. Refer to the parts diagram to be sure of ordering the corr...Read moreect part. You will require a screwdriver when replacing this part. This item is sold individually.