Set Screw: 1-8 x 1", Cup Point, Alloy Steel, Grade 8 MPN:40452

Our premium combo drill and countersink is engineered for precision and efficiency with a #6 size and 5/16 body diameter, constructed from high-speed steel (HSS). Its double-end design allows for simultaneous drilling and counter sinking operations, making it suitable for various machining and tooling applications in industries such as automotive, aerospace, and construction. The premium combo drill and countersink's versatility and durability make it an essential tool for professional machinists, mechanics, and technicians who require precision and efficiency in their work. By using a single tool instead of two separate ones, the combo drill and countersink helps to reduce downtime and increase productivity while providing accurate and consistent results. Upgrade your machining capabilities with our premium #6 size, 5/16 body diameter, high-speed steel combo drill and countersink today!