Keo 906-000-099 Combo Drill Countersink Size 3 Cobalt

Product Description

The KEO 906-000-099 is a combination drill and countersink designed to drill a pilot hole and countersink in a single operation. The body diameter measures 1/4 inch with a 7/64 inch drill point diameter and a 7/64 inch drill point length. Constructed from cobalt high-speed steel with a bright uncoated finish, this tool delivers reliable performance in harder materials where standard high-speed steel may wear prematurely. The included angle is 60 degrees and the drill point angle is 118 degrees. Overall length is 2 inches. It is intended for use by machinists, tool and die makers, and maintenance technicians working with ferrous and non-ferrous metals.

This combo drill countersink is suited for applications requiring precise countersink preparation on metal workpieces in manufacturing, maintenance, and repair environments. It handles countersinking operations for flathead fastener seating and center-drilling tasks on lathes and machining centers. The double end type extends tool life by providing two usable cutting ends. Right-hand cutting direction is compatible with standard drill press and CNC spindle rotation.

Key Features

• Cobalt construction for improved wear resistance in harder materials
• Double-end design provides two cutting ends to extend tool service life
• 60-degree included angle suited for standard countersink fastener applications
• 118-degree drill point angle for clean entry into metal workpieces
• Bright uncoated finish for easy visual inspection of tool condition
• Right-hand cut compatible with standard drill press and machining center spindles

Compatibility

Designed as an OEM-style replacement or direct-use combination drill countersink for standard drill press, lathe, and CNC machining center setups requiring a size 3 countersink with a 1/4 inch body diameter.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with rotating cutting tool safety. Always secure the workpiece properly before engaging the spindle, and verify that spindle speed is appropriate for the material being cut. Power down the machine and confirm the spindle has fully stopped before changing or inspecting the tool. Do not exceed the recommended speed and feed ranges for cobalt tooling in the material being machined.