Keo 906-000-058 Combo Drill Countersink 1/8 in Hss

Product Description

The KEO 906-000-058 is a combination drill and countersink tool designed to perform center drilling and countersinking in a single operation. Built from high-speed steel with a bright uncoated finish, it delivers reliable cutting performance on steel, aluminum, and similar workpiece materials. The tool features a 1/8 inch body diameter, a 1/32 inch drill point diameter, and a 60-degree included angle, making it suitable for creating accurate countersunk seats without tool changes. At 1-1/4 inches overall length, it is sized for use in drill presses, lathes, and machining centers.

This combo drill countersink is suited for metalworking applications where center holes or countersunk entries are required before drilling or turning operations. The aircraft style, double-end configuration and right-hand cut are standard for general-purpose machining setups in both production and job-shop environments. The radius cutting edge style helps reduce chatter and improves hole finish at the countersink entry.

Key Features

• Combination drill and countersink in one tool - eliminates a separate tool change
• High-speed steel construction with bright uncoated finish for general-purpose cutting
• 60-degree included angle for standard countersink geometry
• Aircraft style, double-end design extends usable tool life
• Right-hand cut with radius cutting edge style for reduced chatter
• 118-degree drill point angle for clean center entry

Compatibility

Designed as a size 0 combination drill countersink for use in standard toolholders and drill chucks accepting 1/8 inch body diameter tools on lathes, drill presses, and CNC machining centers.

Installation Notes

This tool is installed and used by machinists and tooling technicians. Secure the tool in a compatible collet, drill chuck, or toolholder rated for the 1/8 inch body diameter before use. Ensure the machine spindle is fully stopped before changing or adjusting the tool. Follow applicable shop safety standards and machine manufacturer guidelines for speed and feed selection.