Cleveland C46199 Countersink 0.25 in 82 Deg 4 Flute Hss

Product Description

The CLEVELAND C46199 is a single-end, 4-flute countersink designed for right-hand cutting in metalworking applications. It features a 0.25-inch head diameter with an 82-degree included angle, making it suited for standard flat-head fastener seat preparation. Constructed from high speed steel with an oxide finish, the C46199 measures 1.438 inches in overall length and accepts a 3/16-inch straight-cylindrical shank. Machinists and tool-and-die professionals install this tool in drill presses, lathes, and hand-held power tools where consistent countersink geometry is required.

This countersink is intended for use on alloy tool steel and cast iron workpieces. The 82-degree angle matches the seating geometry of most standard flat-head machine screws used in industrial and precision fabrication environments. The straight cylindrical shank fits standard drill chucks without an adapter. It does not include a pilot and is designed for countersinking only, not combination drilling and countersinking operations.

Key Features

• 0.25-inch head diameter with 82-degree included angle for standard flat-head fastener seats
• 4-flute geometry provides smooth chip evacuation and consistent finish on alloy tool steel and cast iron
• High speed steel construction handles intermittent and continuous cutting loads
• Oxide finish reduces friction and provides mild corrosion resistance during storage and use
• 3/16-inch straight-cylindrical shank fits standard drill chucks without adapters
• Single-end design with no pilot — used as a dedicated countersinking tool

Compatibility

Designed for countersinking operations on alloy tool steel and cast iron. Fits any standard drill chuck accepting a 3/16-inch straight-cylindrical shank.

Installation Notes

Installation is performed by machinists or skilled tradespeople using a drill press, milling machine, or variable-speed hand drill. Secure the workpiece firmly before operation and set spindle speed appropriate for the material and tool diameter. Inspect the shank and flutes for wear or damage before each use. Do not exceed the tool's rated material hardness range to avoid premature wear or tool breakage.