A countersink is a precision-engineered cutting tool designed to create a conical recess in a workpiece, enabling flat- or oval-head screws, bolts, or rivets to sit flush with or below the material’s surface. This process not only enhances the visual appearance of the finished component but also improves safety by eliminating protruding fasteners that could cause snagging or interference during use.
Countersinks are commonly manufactured in standard angle 90°, depending on the application and the fastener type. They are used across a wide range of materials—including metal, wood, plastics, and composites—and are a vital step in industries such as aerospace, automotive, tooling, and general engineering where both precision and durability are required.
Stiger countersinks are made from high-speed steel (HSS), with advanced surface coatings like TiN or TiAlN to increase tool life, reduce wear, and deliver smooth cutting action. Modern countersinks are engineered to minimize chatter, ensure excellent surface finish, and allow efficient chip evacuation even at high spindle speeds.
In addition to their primary role of screw seating, countersinks are also widely used for deburring drilled holes, creating chamfers, and preparing components for subsequent assembly processes. Their versatility and essential function make them a standard tool in any workshop, CNC machining environment, or assembly line.
Reviews
There are no reviews yet.