Keo 919-001-034 Carbide Countersink 1/8 in 90 Deg 6 Flute

Product Description

The KEO 919-001-034 is a solid carbide countersink designed for precision chamfering, countersinking, and deburring operations in metalworking and fabrication applications. With a 1/8 inch head diameter, a 90-degree included angle, and six flutes, this tool produces clean, accurate conical seats in a single pass. The solid carbide construction delivers superior hardness and wear resistance compared to HSS alternatives, making it well suited for harder workpiece materials and high-cycle production environments. At 1.5 inches overall length and a 1/8 inch shank diameter, it fits standard toolholders and collet chucks used in CNC machining centers, drill presses, and manual mills.

This countersink is applicable across general metalworking, aerospace fabrication, and precision machining shops where fastener seat preparation and edge deburring are routine operations. The 90-degree included angle matches the standard angle for most flat-head machine screw applications per common fastener specifications. It is sized for light-duty work on small-diameter holes, making it a practical tool for machinists, tool-and-die makers, and CNC operators handling fine-detail parts.

Key Features

• Solid carbide construction for extended tool life in hard and abrasive materials
• 90-degree included angle matches standard flat-head fastener seat geometry
• Six-flute design provides smooth cutting action and improved finish quality
• 1/8 inch shank diameter fits standard collet chucks and small-bore toolholders
• Single end type with 1.5 inch overall length for compact reach in tight setups
• Suitable for chamfering, countersinking, and deburring in one tool

Compatibility

Designed as an OEM-style replacement or direct-fit countersink for standard 1/8 inch shank toolholding systems used in CNC machining centers, drill presses, and manual milling machines.

Installation Notes

Installation is performed by machinists and CNC operators using standard collet chucks or drill chucks rated for the 1/8 inch shank diameter. Secure the shank fully within the collet or chuck bore before operation and verify runout before cutting. Carbide tooling is brittle - avoid side-loading or interrupted cuts that can cause chipping. Always reduce spindle speed and feed rate when first engaging a new workpiece to confirm alignment.