Keo 919-000-039 Countersink Set 7 Pc 6 Flute Tialn

Product Description

The KEO 919-000-039 is a 7-piece countersink set engineered for chamfering, countersinking, and deburring in metal fabrication and machining applications. Built from cobalt steel with a TiAlN coating, these countersinks are suited for work in harder materials where high-speed steel tools fall short. The set covers head diameters from 0.25 inches to 1 inch, shank diameters from 0.25 inches to 0.5 inches, and overall lengths from 1.5 inches to 2.75 inches. Each countersink features 6 flutes and an 82-degree included angle, which is the standard angle for most fastener head seating in metalworking.

This set is used in machine shops, maintenance facilities, and production environments where a range of countersink sizes is required at a single workstation. The 7-piece assortment spans the most common head diameter increments, making it practical for technicians and machinists who need to prep holes for flat-head fasteners, deburr drilled edges, or cut chamfers across varying stock sizes. Tools store in an included plastic case for organized access at the bench or in the field.

Key Features

• 7-piece set covers head diameters from 0.25 inches to 1 inch in common increments
• 6-flute geometry for smooth, chatter-resistant cutting action
• 82-degree included angle matches standard flat-head fastener specifications
• Cobalt steel construction for improved heat and wear resistance over HSS
• TiAlN coating extends tool life in harder workpiece materials
• Shank diameters from 0.25 inches to 0.5 inches for compatibility with standard drill chucks and collets
• Includes plastic storage case to organize and protect all 7 pieces

Compatibility

Designed for use with standard drill presses, CNC machining centers, and hand drills equipped with chucks or collets accepting shank diameters from 0.25 inches to 0.5 inches. Suitable for chamfering, countersinking, and deburring operations on metal workpieces.

Installation Notes

Countersinks should be installed by a qualified machinist or tooling technician. Secure the shank firmly in a drill chuck or collet before operation and verify runout is within acceptable limits to prevent chatter. Always power down and de-energize the machine before changing tooling. Follow applicable shop safety standards and machine manufacturer guidelines when setting spindle speed for the workpiece material.