Cleveland C46273 Combo Drill Countersink Size 12 Hss

Product Description

The CLEVELAND C46273 is a combination drill and countersink designed for simultaneous drilling and countersinking in a single pass. Built from high-speed steel with a bright, uncoated finish, this tool features a 3/16-inch body diameter, a 118-degree drill point angle, and a 60-degree included angle for producing clean, accurate countersunk holes. The bell-style cutting edge and right-hand cut make it well suited for production and maintenance environments where consistent hole geometry is required. It is installed and used by machinists, metal fabricators, and maintenance technicians working with ferrous and non-ferrous materials.

The C46273 is a size 12 combo drill countersink with a double-end configuration, giving the tool extended service life by providing two usable cutting ends. It is appropriate for countersinking and drilling operations in alloy tool steel, aluminum, carbon steel, and cast iron. Typical applications include fastener seat preparation, deburring, and center drilling on manual and CNC lathes, mills, and drill presses in light manufacturing, maintenance, and repair settings.

Key Features

• High-speed steel construction provides durability across a range of workpiece materials
• 118-degree drill point angle for general-purpose drilling
• 60-degree included angle for standard countersunk fastener seat preparation
• Bell-style cutting edge geometry for smooth, accurate countersinking
• Double-end design extends tool life by offering two cutting ends
• Bright, uncoated finish suitable for use with cutting fluids

Compatibility

Compatible workpiece materials include alloy tool steel, aluminum, carbon steel, and cast iron. Suitable for use on manual lathes, CNC lathes, mills, and drill presses requiring size 12 combo drill countersinks with a 3/16-inch body diameter.

Installation Notes

This tool is used by machinists and metal fabricators in lathe, mill, or drill press setups. Secure the tool firmly in the appropriate collet or chuck before operation and verify spindle speed is set per material and tool diameter recommendations. Use appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish. Inspect both cutting ends for wear or damage before each use.