What is a countersink?

Career: Countersink

Countersinks are specialized cutting tools or drill bits used to create a conical hole in a material, typically metal, wood, or plastic. This conical hole allows the head of a countersunk screw or bolt to sit flush with or below the surface of the material. Countersinking is commonly done to improve both the appearance and functionality of fastened joints, preventing snagging and ensuring a smoother surface. The process is widely used in woodworking, metalworking, and construction industries.