Keo 919-000-348 Countersink 5/8 in 82 Deg 6 Flute Hss

Product Description

The KEO 919-000-348 is a single-end, 6-flute countersink designed for producing accurate conical seat profiles in metal and other machinable materials. Built from high-speed steel, it delivers consistent cutting performance across production and maintenance applications. The tool features a 5/8 inch head diameter, an 82-degree included angle, and a 1/4 inch straight-cylindrical shank, making it compatible with standard drill chucks and collet holders. Right-hand cutting direction is standard. This countersink is used by machinists, tool-and-die professionals, and maintenance technicians requiring clean, burr-minimized countersunk holes for flat-head fasteners.

This countersink is suited for general-purpose countersinking operations in both shop and field environments. The 82-degree included angle matches the seating geometry required for most imperial flat-head machine screws and fasteners. The 1/4 inch straight shank fits a wide range of drill presses, CNC machining centers, and hand-held power drills. No pilot is included. The tool is intended for right-hand rotation only and is not designed for left-hand spindle use.

Key Features

• 5/8 inch head diameter for full-seat countersinking of standard flat-head fasteners
• 82-degree included angle matching common imperial flat-head screw geometry
• 6-flute design for smoother 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 collets
• Right-hand cut, single-end tool - no pilot included

Compatibility

Designed as a general-purpose countersink for use in drill presses, CNC machining centers, and power drills accepting a 1/4 inch straight-cylindrical shank.

Installation Notes

Installation and use should be performed by a qualified machinist or maintenance technician. Secure the workpiece firmly before operation and ensure the spindle speed is appropriate for the workpiece material and tool diameter. Power down and de-energize any machine tool completely before inserting or removing the countersink from the chuck or collet. Do not use this tool in left-hand rotation setups.