Keo 906-000-101 Combo Drill Countersink Size 3 Hss

Product Description

The KEO 906-000-101 is a combination drill and countersink tool machined from high-speed steel with a bright, uncoated finish. Designed for metalworking and fabrication, it drills a pilot hole and chamfers the entry in a single operation, reducing setup time on the bench or drill press. The trade size 3 body measures 1/4 inch in diameter with a 7/64 inch drill point diameter and a 7/64 inch drill point length. Overall length is 2 inches. The 82-degree included angle produces a standard countersink profile for flat-head fastener seating. Right-hand cutting direction. Machinists, fabricators, and maintenance technicians install this tool in drill presses, lathes, and hand drills.

This combo drill countersink is suited for light- to medium-duty countersinking operations in metal, wood, and plastics. The plain cutting edge style and double end type make it a practical choice for production runs and field repair work alike. Typical applications include chamfering drilled holes before tapping, preparing holes for flat-head cap screws, and deburring entry points on structural members. The compact 2-inch overall length fits standard collets and chucks without overhang issues in tight workspaces.

Key Features

• Combination drill and countersink in a single tool - drills and chamfers in one pass
• High-speed steel construction for durability across metal, wood, and plastic substrates
• 82-degree included angle for standard flat-head fastener countersink profile
• 118-degree drill point angle for fast, centered entry on common materials
• Double end type extends tool life - both ends are usable cutting ends
• Bright, uncoated finish - no coating buildup to affect dimensional tolerances

Compatibility

Designed as a standard trade size 3 combo drill countersink compatible with drill presses, lathes, and hand drills accepting a 1/4 inch shank diameter tool.

Installation Notes

This tool is installed by machinists and fabricators in conventional drill chucks or collet holders. Secure the shank firmly before operation and verify spindle speed is appropriate for the workpiece material and tool diameter. Always power down and de-energize the machine before changing tooling. Eye protection is required during all drilling and countersinking operations.