Cleveland C46150 Countersink 1/4 in 60 Degree 3 Flute Hss

Product Description

The CLEVELAND C46150 is a single-end countersink designed for creating conical seat recesses in carbon steel and cast iron workpieces. It features a 1/4-inch head diameter, a 60-degree included angle, and three flutes ground from high speed steel (HSS) for durable cutting performance. The oxide finish reduces friction and helps resist heat buildup during operation. With a straight-cylindrical 3/16-inch shank, it mounts directly into standard drill chucks or countersink holders for repeatable, centered results. This tool is appropriate for machinists, fabricators, and maintenance technicians working with ferrous metals in production or field environments.

This countersink is suited for light-duty countersinking operations on carbon steel and cast iron in both shop and industrial maintenance settings. The 60-degree included angle matches standard fastener seat geometries common in general fabrication and assembly work. The three-flute design provides a balance of cutting speed and surface finish quality. It is used without a pilot and produces a countersink head recess only, making it a straightforward, single-purpose tool for technicians who need a reliable HSS countersink in a compact 1/4-inch head size.

Key Features

• 1/4-inch head diameter with a 60-degree included angle for standard fastener seat prep
• Three flutes for balanced cutting action and improved chip clearance
• High speed steel construction for durability on carbon steel and cast iron
• Oxide finish to reduce friction and extend tool life
• Straight-cylindrical 3/16-inch shank fits standard chucks and holders
• Single-end, no-pilot design for direct countersinking without a guide

Compatibility

Designed for countersinking operations in carbon steel and cast iron. Fits standard drill chucks and countersink holders that accept a 3/16-inch straight-cylindrical shank.

Installation Notes

This tool is installed and operated by machinists or maintenance technicians using a drill press, CNC machine, or hand drill with an appropriate chuck. Secure the workpiece before operation and confirm the shank is fully seated and tightened in the chuck. Use appropriate cutting speeds for HSS tooling on ferrous metals and apply cutting fluid where recommended to extend tool life. Inspect the flutes for wear or chipping before each use.