Value Collection GH8790149 Counterbore 7/32 in 3 Flute Hss

Product Description

The VALUE COLLECTION GH8790149 is a 3-flute interchangeable pilot counterbore designed for precision enlarging and finishing of bolt holes and fastener seats in metal workpieces. Machined from high speed steel with a bright, uncoated finish, this counterbore measures 7/32 inch in cutting diameter with a 15/64 inch straight shank and a 3-inch overall length. The interchangeable pilot system accepts a 3/32 inch pilot shank, allowing the tool to be quickly reconfigured for different pilot sizes without replacing the entire body. It is suited for machine shop and production environments where accurate counterbore geometry and repeatable results are required.

This counterbore is used in applications where a flat-bottomed recess must be cut to seat cap screws, socket head bolts, or similar fasteners flush or below the workpiece surface. Right-hand cutting direction makes it compatible with standard drill press, milling machine, and CNC spindle setups. The bright finish is appropriate for general-purpose ferrous and non-ferrous metal cutting at moderate speeds. Machinists, tool-and-die makers, and maintenance technicians working with small-diameter fastener holes will find this tool applicable to both production runs and one-off repair work.

Key Features

• 7/32 inch counterbore diameter for precise flat-bottomed recesses
• 3 flutes for smooth cutting action and chip evacuation
• High speed steel construction provides hardness and wear resistance
• Interchangeable pilot accepts 3/32 inch pilot shank for flexible reconfiguration
• Bright, uncoated polished finish suitable for general metal cutting
• Right-hand cutting direction compatible with standard spindle rotation

Compatibility

Designed as an OEM-style interchangeable pilot counterbore for use in drill press, milling machine, and CNC setups requiring a 7/32 inch counterbore diameter and a 15/64 inch straight shank.

Installation Notes

Installation is performed by machinists or maintenance technicians. Secure the 15/64 inch straight shank in a drill chuck or collet rated for the spindle in use, and ensure the machine is powered down and locked out before changing pilots or tooling. Select the correct 3/32 inch pilot to match the clearance hole diameter in the workpiece before beginning the cut. Follow applicable shop safety procedures and use appropriate cutting fluid for the workpiece material to extend tool life.