Guhring 9056750254000 Countersink 1 in 82 Degree 3 Flute Tialn

Product Description

The GUHRING 9056750254000 is a single-end cobalt steel countersink designed for precision chamfering and countersinking in demanding metalworking applications. Built with a TiAlN coating, it handles elevated cutting temperatures and extends tool life when working through hard ferrous materials. The 82-degree included angle makes it well-suited for flat-head fastener seating where exact angular geometry is required. Three flutes provide a balance of chip clearance and surface finish quality, and the right-hand cut configuration is compatible with standard drill press and milling spindle rotation. Licensed machinists, tool-and-die techs, and fabricators working in production or maintenance environments will find this countersink appropriate for consistent, repeatable results.

This countersink is intended for use on cast iron, stainless steel, and carbon steel workpieces. The 1/2-inch, 3-flat shank seats securely in standard drill chucks and collet holders, reducing slippage under load. At 2.75 inches in overall length and 1 inch in head diameter, it fits bench drill presses, knee mills, and CNC machining centers equipped with appropriate toolholding. A minimum cut diameter of 0.25 inches (1/4 inch) allows work on smaller fastener patterns. No pilot is included, so workpiece spotting or center-drilled holes are recommended before countersinking for best angular accuracy.

Key Features

• TiAlN coating increases surface hardness and heat resistance for extended tool life in hard metals
• 82-degree included angle seats flat-head fasteners flush in standard countersunk hole patterns
• 3-flute geometry balances chip evacuation with smooth surface finish
• Cobalt steel substrate withstands heat and work hardening encountered in stainless and cast iron
• 3-flat shank prevents rotation and slippage in chuck or collet toolholding
• Right-hand cut compatible with standard clockwise spindle rotation on all common machine types

Compatibility

Rated for countersinking cast iron, stainless steel, and carbon steel. Fits standard 1/2-inch chucks and collet holders that accept a 3-flat shank. No specific OEM system compatibility is stated in available product data.

Installation Notes

Installation and use of this countersink should be performed by qualified machinists following safe machine operation procedures. Power down and lock out the spindle before loading or removing the tool from the chuck or collet. Secure the 3-flat shank fully within the toolholder to the recommended engagement depth before operating. Apply cutting fluid appropriate for the workpiece material, particularly when countersinking stainless steel or cast iron, to manage heat and extend tool life.