Keo 919-000-344 Countersink 1/2 in 82 Deg 6 Flute Hss

Product Description

The KEO 919-000-344 is a single-end, six-flute countersink designed for creating clean, accurately angled seat profiles in metal and similar workpiece materials. Built from high-speed steel, it delivers consistent cutting performance across production and maintenance applications. The 82-degree included angle suits standard fastener seating requirements. With a 1/2-inch head diameter and a 1/4-inch straight cylindrical shank, this tool mounts readily in standard drill chucks and collet holders. Right-hand cutting direction matches conventional drill press and CNC spindle rotation. Machinists, tool-and-die technicians, and maintenance professionals use this countersink for deburring, chamfering, and fastener-seat preparation.

This countersink is suited for job-shop, production floor, and MRO environments where consistent countersink geometry is required. The 82-degree angle accommodates flat-head machine screws and similar hardware. The straight cylindrical shank with a 1-inch shank length provides secure clamping in drill press, milling machine, or hand-drill setups. It does not include a pilot, making it appropriate for use where the operator controls centering through fixturing or a guide bushing. Applications span light ferrous and non-ferrous material stock preparation.

Key Features

• 82-degree included angle for standard flat-head fastener seating
• Six flutes for smooth cutting action and reduced chatter
• High-speed steel construction for durability across a range of workpiece materials
• 1/4-inch straight cylindrical shank fits standard chucks and collet holders
• Right-hand cut matches conventional spindle rotation
• No pilot - compatible with guided or fixtured centering setups

Compatibility

Designed as an OEM-style countersink for use in drill presses, milling machines, CNC machining centers, and hand drills accepting a 1/4-inch straight shank.

Installation Notes

A licensed machinist or qualified technician should secure the shank firmly in an appropriate chuck or collet before operation. Ensure the spindle is fully stopped and the machine is powered down before installing or removing the tool. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain surface finish quality. Follow shop safety standards and applicable OSHA guidelines when operating rotating cutting tools.