Countersunk milling cutter — precision tool for creating or finishing screw and hole heads on milling machines Key benefits Produces clean, accurate countersinks for screw heads and hole chamfers, improving assembly fit and appearance. Reduces tool change time and shortens overall mold and part production time by combining cutting and finishing operations. Improves motion efficiency of machine tool actuators through smooth cutting action, which supports faster cycle times and consistent results. Long service life thanks to toughness, wear resistance, and hardness, while maintaining good machinability for consistent cutting performance. What it is and how it works A countersunk milling cutter specially manufactured for cutting heads of holes and screw holes. Made from hard speed steel for durability and reliable cutting under production conditions. Designed for assembly and operation on milling machines. Compatibility and materials Suitable for milling common engineering materials: aluminum, steel, cast iron, and similar workpieces. Intended for installation and use on milling machines; compatible with typical milling operations. Performance and physical attributes Constructed from hard speed steel to balance toughness and hardness with machinability. Wearresistant design minimizes downtime for regrinding or replacement. Delivers precise geometry for consistent countersink angles and surface finish. Typical applications (use scenarios) Electronics enclosures: countersinking screw holes in aluminum housings for flush fastener installation. Structural parts and panels: creating accurate countersinks and chamfers in steel frames and brackets prior to assembly or coating. Mold and tooling work: finishing screw holes and chamfers on cast iron molds and tooling components to reduce assembly time and improve fit. Why choose this cutter Purposebuilt for countersinking tasks on milling machines using durable speed steel. Practical across a range of materials and processes, reducing tool changes and speeding production without sacrificing edge life or finish quality.