Keo 906-000-079 Combo Drill Countersink 3/16 in Cobalt

Product Description

The KEO 906-000-079 is a combination drill and countersink designed to drill a pilot hole and countersink in a single pass. Made from cobalt high-speed steel with a bright, uncoated finish, this tool handles tough materials including stainless steel and high-temperature alloys. The body measures 3/16 inches in diameter with a 5/64-inch drill point diameter and a 5/64-inch drill point length. Overall length is 1-7/8 inches. The 118-degree drill point angle and 60-degree included countersink angle are standard geometry for center drilling and countersinking operations in metalworking applications.

This combo drill countersink is suited for machine shops, maintenance facilities, and fabrication environments where accurate center drilling and countersinking are required before turning or milling operations. The double-end design extends tool life by providing two usable ends. Right-hand cut geometry is compatible with standard drill press, lathe, and CNC spindle rotation. The No. 2 trade size fits common center drill holder and collet setups used in production and job-shop environments.

Key Features

• Cobalt construction for improved heat and wear resistance in hard metals
• Bright uncoated finish for use across a wide range of metalworking materials
• 118-degree drill point angle with 60-degree countersink included angle
• Double-end design doubles usable tool life before replacement
• Right-hand cut, plain cutting edge style for standard spindle rotation
• Compact 1-7/8-inch overall length fits standard center drill holders and collets

Compatibility

Designed as an OEM-style replacement or standard tooling option for lathes, drill presses, and CNC machining centers that accept No. 2 trade size combination drill and countersink tooling.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Secure the tool in a compatible collet, chuck, or center drill holder rated for the 3/16-inch body diameter before operation. Power down and de-energize the machine spindle before inserting or removing the tool. Follow machine manufacturer guidelines for appropriate spindle speeds and feeds when center drilling or countersinking.