Cleveland C46101 Countersink 1/4 in 60 Degree Hss

Product Description

The CLEVELAND C46101 is a single-flute countersink designed for producing clean, accurate countersunk holes in carbon steel and cast iron workpieces. With a 1/4 inch head diameter and a 60-degree included angle, it cuts on the right-hand rotation and seats fasteners flush or below the surface with minimal chatter. The straight cylindrical shank measures 3/16 inch in diameter and mounts in standard drill chucks or collet holders. Manufactured from high speed steel with an oxide finish, the C46101 delivers consistent performance in production and maintenance machining applications. It is installed and operated by machinists, tool and die technicians, and maintenance professionals.

This countersink is suited for light-duty countersinking operations on carbon steel and cast iron in both shop and field maintenance environments. The single-flute geometry reduces cutting forces and is well-suited for hand-drill applications, drill press work, and CNC setups where a controlled, burr-free entry angle is needed. The 60-degree included angle is commonly used for seating flat-head fasteners and deburring drilled holes to standard fastener specifications.

Key Features

• 1/4 inch head diameter with a 60-degree included angle for standard flat-head fastener seating
• Single-flute design reduces cutting pressure and minimizes chatter
• High speed steel construction provides wear resistance on carbon steel and cast iron
• Oxide coating improves lubricity and corrosion resistance during use
• 3/16 inch straight cylindrical shank fits standard drill chucks and collet holders
• Right-hand cut geometry compatible with conventional drill press and CNC spindle rotation

Compatibility

Designed for countersinking operations in carbon steel and cast iron. Compatible with standard drill chucks and collet holders accepting a 3/16 inch straight cylindrical shank.

Installation Notes

Install and operate by qualified machinists or maintenance technicians familiar with rotary cutting tools. Secure the shank firmly in the chuck or collet before operation and confirm the workpiece is clamped. Use cutting fluid appropriate for the workpiece material to extend tool life and improve finish quality. Inspect the cutting edge for wear or damage before each use and do not exceed the recommended speed range for high speed steel tooling in the material being cut.