Keo 919-000-927 Countersink Set 5 Pc Tialn Solid Carbide

Product Description

The KEO 919-000-927 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 single-flute countersink in the set features a TiAlN coating, which reduces heat buildup and extends tool life in demanding cutting conditions. Head diameters range from 0.25 inches to 0.75 inches, with a fixed included angle of 60 degrees throughout the set. Shank diameters range from 0.25 inches to 0.375 inches, making the set compatible with standard drill chucks and collet holders. Overall lengths run from 2 inches to 2.75 inches. The tools are stored in a plastic case for organized access on the job site or in the shop.

This countersink set is suited for metal fabrication, machine shops, maintenance and repair operations, and production environments where consistent chamfer and countersink geometry is required. The single-flute design helps reduce chatter on non-ferrous metals and harder alloys. The 60-degree included angle is a common standard for fastener seat preparation. Applications include chamfering drilled holes, countersinking screw seats, and deburring hole edges on metal workpieces. The set format provides a range of head diameters in a single kit, reducing the need for individual tool sourcing across common sizing requirements.

Key Features

• 5-piece set covers head diameters from 0.25 inches to 0.75 inches in a single kit
• Solid carbide construction for rigidity and wear resistance in metal cutting applications
• TiAlN coating reduces friction and heat, extending tool life in ferrous and harder alloy materials
• Single-flute geometry minimizes chatter and produces clean, consistent chamfer geometry
• Fixed 60-degree included angle throughout the set for uniform fastener seat preparation
• Plastic storage case included for organized tool storage and transport

Compatibility

Designed for use in standard drill chucks and collet holders accepting shank diameters of 0.25 inches to 0.375 inches. Suitable for chamfering, countersinking, and deburring operations on metal workpieces in machining and fabrication applications.

Installation Notes

Installation and use of these countersinks should be performed by qualified machinists or tool operators familiar with rotary cutting tool safety. Ensure the machine spindle is fully stopped and power is locked out before changing or securing any tool in the chuck or collet. Select the appropriate shank diameter for the holding device in use and verify secure tool engagement before operation. Follow the machine manufacturer and applicable shop safety guidelines for speeds, feeds, and workholding when performing countersinking or chamfering operations.