Cleveland C46155 Countersink 1/4 in 120 Degree 3 Flute Hss

Product Description

The CLEVELAND C46155 is a single-end, three-flute countersink designed for right-hand cutting in carbon steel and cast iron. The tool features a 1/4-inch head diameter and a 120-degree included angle, making it suited for standard flat-head fastener seat preparation. The straight cylindrical shank measures 3/16 inch in diameter for secure chuck engagement. An oxide coating provides basic corrosion resistance and reduces friction during cutting. Machinists and metalworking tradespeople use this tool with standard drill presses, lathes, or hand drills when preparing countersunk holes in ferrous materials.

This countersink is intended for countersinking operations in carbon steel and cast iron workpieces. Its compact 1/4-inch head diameter suits smaller fastener applications where precision seating is required. The 3/16-inch straight cylindrical shank fits standard drill chucks commonly found in machine shops and on job sites. The three-flute geometry helps produce a clean, smooth seat with reduced chatter compared to single-flute alternatives. No pilot is included, so the operator controls centering during use.

Key Features

• 1/4-inch head diameter with 120-degree included angle for standard flat-head fastener seating
• Three-flute cutting geometry for reduced chatter and smoother finish
• High-speed steel construction for durability in ferrous material applications
• Oxide coating for corrosion resistance and reduced friction
• 3/16-inch straight cylindrical shank for compatibility with standard drill chucks
• Right-hand cut, single-end design with no pilot required

Compatibility

Rated for use in carbon steel and cast iron. Fits standard drill chucks accepting a 3/16-inch straight cylindrical shank.

Installation Notes

Install the shank securely in a drill chuck or collet before operation. Ensure the workpiece is firmly clamped to prevent movement during countersinking. Apply consistent, moderate feed pressure to avoid chatter or tool deflection. Inspect the cutting edges before each use and replace the tool if chipping or excessive wear is observed.