Cleveland C46198 Countersink 1/4 in 60 Degree 4 Flute Hss

Product Description

The CLEVELAND C46198 is a single-end, four-flute countersink designed for creating conical seat profiles in metal workpieces. It features a 1/4 inch head diameter with a 60-degree included angle, making it suited for fastener seating and deburring operations in alloy tool steel and cast iron. The straight cylindrical shank measures 3/16 inch in diameter for secure chuck engagement. An oxide coating reduces friction and extends tool life in production and job-shop environments. This tool is installed and used by machinists, tool-and-die workers, and maintenance technicians across manufacturing and fabrication settings.

The C46198 countersink is suited for countersinking operations in ferrous materials including alloy tool steel and cast iron. Its four-flute geometry provides smooth cutting action and reduced chatter compared to single-flute designs. The right-hand cutting direction is compatible with standard drill press and CNC machining center spindle rotation. Typical applications include preparing holes for flat-head fasteners, chamfering hole entries, and removing burrs from drilled holes in structural and precision components.

Key Features

• 1/4 inch head diameter with a 60-degree included angle for standard fastener seat geometry
• Four-flute design for smooth, chatter-resistant cutting in ferrous metals
• 3/16 inch straight cylindrical shank for broad chuck compatibility
• Oxide coating finish reduces friction and improves tool durability
• Right-hand cut direction matches standard spindle rotation on drill presses and machining centers
• Single-end construction; no pilot included

Compatibility

Rated for use in alloy tool steel and cast iron. Designed for use with standard drill press chucks and CNC machining center toolholders accepting a 3/16 inch straight cylindrical shank.

Installation Notes

This countersink is installed and operated by machinists and metalworking technicians. Ensure the workpiece is securely clamped and the spindle is fully stopped before changing or inspecting the tool. Use appropriate cutting fluid or lubricant when working in hard ferrous materials to extend tool life. Follow machine manufacturer guidelines for appropriate spindle speed based on workpiece material and head diameter.