Keo 919-001-054 Countersink Set 5 Pc 6 Flute Tialn Carbide

Product Description

The KEO 919-001-054 is a 5-piece solid carbide countersink set designed for chamfering, countersinking, and deburring operations across a range of fastener and hole preparation tasks. Each countersink in the set features 6 flutes and a 90-degree included angle, which produces clean, consistent seat geometry with minimal chatter. Head diameters span 1/4 inch to 3/4 inch, and shank diameters range from 1/4 inch to 3/8 inch, covering the most common machine screw and bolt countersink profiles. A TiAlN coating increases surface hardness and heat resistance, extending tool life in ferrous and non-ferrous materials. The set ships in a plastic storage case. Machinists, tool-and-die technicians, and maintenance mechanics are the typical end users.

This set is suited for use in manual and CNC drilling operations where multiple countersink sizes are needed at a single workstation. The range of head diameters and overall lengths - from 2 inches to 2.75 inches - makes it practical for production, job-shop, and maintenance environments working with steel, aluminum, and similar machinable materials. Single-end construction keeps setup straightforward in standard drill chucks and collet holders.

Key Features

• 5-piece set covering 1/4 inch to 3/4 inch head diameters in a single case
• 6-flute design for smooth cutting action and reduced chatter
• 90-degree included angle suits the most common countersink fastener profiles
• TiAlN coating for improved heat resistance and extended tool life
• Solid carbide construction for rigidity and wear resistance
• Shank range of 1/4 inch to 3/8 inch fits standard chucks and collets
• Plastic storage case included for organized tool storage

Compatibility

Designed as a general-purpose countersink set compatible with standard drill presses, CNC machining centers, and hand drills equipped with chucks or collets accepting 1/4 inch to 3/8 inch shanks.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with cutting tool safety. Secure the shank firmly in the chuck or collet before operation and verify spindle speed is appropriate for the material being machined. Inspect each tool for chips or cracks before use and never operate a damaged carbide tool. Wear appropriate eye protection when performing countersinking or deburring operations.