Keo 906-000-245 Combo Drill Countersink Size 15 Cobalt

Product Description

The KEO 906-000-245 is a combination drill and countersink tool designed to drill a pilot hole and countersink in a single pass. Built from cobalt high-speed steel with a bright uncoated finish, it delivers strong heat and wear resistance for use in hard and abrasive materials. The tool features a 7/16 inch body diameter, a 5/32 inch drill point diameter, a 118-degree drill point angle, and a 60-degree included angle on the countersink. With an overall length of 2-3/4 inches, it is sized for bench drill presses, CNC mills, and handheld drill setups where precision countersinking is required. It is installed and used by machinists, metalworkers, and tool-and-die professionals.

This combo drill countersink is suited for countersinking fastener seats in metal fabrication, aerospace prep work, and general machining applications where consistent countersink geometry is critical. The double-end style and bell cutting edge allow for clean, burr-free countersinks in a range of ferrous and non-ferrous materials. Trade size 15 designates the drill point size within the standard combined drill and countersink numbering system, making it easy to match to standard fastener specifications.

Key Features

• Cobalt construction for improved hardness and heat resistance compared to standard HSS
• 118-degree drill point angle suited to general-purpose metal drilling
• 60-degree included angle for standard countersink profiles
• Bell cutting edge style for smooth, accurate countersink seats
• Double-end design extends usable tool life
• Right-hand cut for use in conventional drill press and CNC spindle rotation

Compatibility

Designed as a standard combination drill and countersink for use in drill presses, milling machines, and CNC equipment accepting straight-shank tooling in metalworking and machining applications.

Installation Notes

This tool is installed and operated by machinists and metalworkers using drill presses, lathes, or CNC milling machines. Secure the shank firmly in a collet or drill chuck before operation and verify spindle speed is appropriate for the workpiece material and tool diameter. Always bring the spindle to a full stop before measuring or adjusting workpiece position. Use cutting fluid when working with harder alloys to extend tool life and maintain surface finish quality.