Keo 906-000-227 Combo Drill Countersink Size 13 Cobalt

Product Description

The KEO 906-000-227 is a combination drill and countersink tool designed for one-step drilling and countersinking operations in metal fabrication, aerospace, and general machining applications. Built from cobalt high-speed steel, it delivers superior heat and wear resistance compared to standard HSS tools, making it well suited for harder materials including stainless steel and alloy steels. The tool features a 118-degree drill point angle, a 60-degree included angle for the countersink, and a bell-style cutting edge. It ships in a bright, uncoated finish and cuts in the right-hand direction. Overall length is 2 inches with a 1/4-inch body diameter.

This combo drill countersink is sized at trade size 13 with a 3/32-inch drill point diameter and a 3/32-inch drill point length. It is used in machine shops, fabrication facilities, and maintenance environments wherever a countersunk hole is needed for flat-head fasteners or deburring of drilled holes. The double-end style and bell cutting edge geometry make it a standard choice for production and repair work on steel, stainless, and other ferrous materials.

Key Features

• Cobalt construction for improved heat resistance and longer tool life in hard materials
• 118-degree drill point angle for general-purpose drilling performance
• 60-degree included angle bell cutting edge for clean countersink geometry
• Right-hand cut, double-end configuration for extended service life
• Bright uncoated finish - no coating buildup to affect tolerances
• Compact 2-inch overall length suited for confined setups

Compatibility

Designed as a standard replacement or production combo drill countersink for use in drill presses, CNC machining centers, and hand-held power tools accepting 1/4-inch shank tooling.

Installation Notes

This tool is installed and used by machinists, tool and die makers, and maintenance technicians. Secure the 1/4-inch shank firmly in an appropriate chuck or collet before operation. Always run at the recommended cutting speed for the workpiece material and use cutting fluid when machining stainless or alloy steels to extend tool life. Inspect the cutting edges before each use and remove the tool from service if chipping or excessive wear is present.