Keo 906-000-029 Combo Drill Countersink 1/8 in Cobalt

Product Description

The KEO 906-000-029 is a combination drill and countersink designed for simultaneous center-drilling and countersinking in a single operation. Built from cobalt high-speed steel, this tool handles tough materials including stainless steel, alloy steel, and heat-resistant alloys where standard HSS tools wear prematurely. The 1/8-inch body diameter and 0.025-inch drill point diameter make it well-suited for small-diameter center holes. The 60-degree included angle and 118-degree drill point angle are standard specifications for countersinking operations on machined components. Overall length is 1.25 inches. This tool is installed and operated by machinists, tool-and-die workers, and maintenance professionals working with metal fabrication or precision drilling applications.

This combo drill countersink is intended for use in machining centers, drill presses, and manual lathes where center-drilling and countersinking are required before turning or between-centers work. The aircraft style designation indicates it conforms to dimensions used in aerospace and precision manufacturing workflows. The right-hand cutting direction and plain cutting edge style make it compatible with standard right-hand spindle rotation. It is appropriate for light-duty countersinking in both production and maintenance settings.

Key Features

• Cobalt construction for extended tool life in hard and heat-resistant materials
• Combination drill and countersink eliminates a separate tool change between operations
• 60-degree included angle suits standard countersink and center-drilling applications
• 118-degree drill point angle for effective penetration in metal workpieces
• Aircraft style geometry for precision and dimensional consistency
• Double end type allows the tool to be reversed when one end wears, extending usable life

Compatibility

Designed as an OEM-style replacement or direct-use combo drill countersink for standard right-hand spindle machine tools requiring a 2/0 trade size center drill with a 1/8-inch body diameter.

Installation Notes

Installation and operation should be performed by qualified machinists or maintenance professionals. Secure the tool firmly in the spindle chuck or collet before engaging the workpiece, and verify spindle rotation is set to right-hand direction before starting. Always power down and de-energize the machine before changing or inspecting the tool. Follow applicable shop safety standards and manufacturer guidelines for feeds and speeds appropriate to the workpiece material.