Cleveland C46164 Countersink 1/2 in 90 Deg 3 Flute Hss

Product Description

The CLEVELAND C46164 is a single-end, three-flute countersink designed for clean, accurate chamfering of fastener seats in metal fabrication and machining applications. Built from high speed steel (HSS) with an oxide finish, it delivers a 90-degree included angle and a 1/2 inch head diameter. The straight cylindrical 1/4 inch shank seats securely in standard drill chucks and quick-change adapters. Right-hand cutting geometry produces smooth surface finishes on countersunk holes destined for flat-head and oval-head fasteners. This tool is suited for machinists, tool-and-die technicians, and skilled tradespeople working with carbon steel and cast iron workpieces.

The C46164 is intended for countersinking operations in carbon steel and cast iron. Its three-flute design reduces chatter compared to single-flute tools, making it appropriate for bench drill presses, CNC machining centers, and hand-held drill applications where a consistent 90-degree seat angle is required. The 1/4 inch shank accommodates a wide range of standard chuck sizes commonly found in both shop and field environments.

Key Features

• 90-degree included angle (45-degree centerline angle) for standard flat-head fastener seating
• 1/2 inch (0.500 inch) head diameter for common fastener size ranges
• Three flutes reduce chatter and improve surface finish
• High speed steel construction for durability on carbon steel and cast iron
• Oxide finish provides corrosion resistance and reduces friction during cutting
• Straight cylindrical 1/4 inch shank fits standard drill chucks and quick-change systems
• Single-end design, no pilot included

Compatibility

Designed for countersinking operations in carbon steel and cast iron workpieces. Compatible with standard drill presses, mill spindles, and hand drills accepting a 1/4 inch straight cylindrical shank.

Installation Notes

This countersink is installed by a machinist or qualified tradesperson in any drill press, milling machine, or hand drill with a compatible chuck. Ensure the workpiece is securely fixtured before beginning the cut. Use cutting fluid or lubricant when working with carbon steel to extend tool life and improve finish quality. Inspect the cutting edges for wear before each use and replace if chipping or dullness is observed.