Value Collection GH8861320 Solid Pilot Counterbore 25/32 in

Product Description

The VALUE COLLECTION GH8861320 is a solid pilot counterbore designed for precise, flat-bottomed recessing operations in metalworking and machining applications. Built from high speed steel, this tool delivers reliable cutting performance on a range of common workpiece materials. It features a 25/32 inch counterbore diameter, a 17/32 inch standard pilot diameter sized for 1/2 inch fastener compatibility, and a 3-flute cutting geometry that balances chip evacuation with surface finish quality. The Morse Taper No. 2 shank seats securely in compatible drill press or milling machine spindles. Forward cutting direction is standard. This tool is intended for use by machinists and tool-and-die professionals working in job shop, maintenance, or production environments.

This counterbore is suited for recessing socket head cap screws and similar 1/2 inch fasteners flush with or below a workpiece surface. Typical applications include fixture building, structural fabrication, and general machine shop work where a clean, accurately sized counterbore seat is required. The solid pilot design provides positive centering without a removable or interchangeable pilot, making setup straightforward for production or repeat operations.

Key Features

• 25/32 inch counterbore diameter for 1/2 inch fastener seating
• 17/32 inch standard pilot diameter for positive bore alignment
• High speed steel construction for durability across common workpiece materials
• 3-flute geometry balances chip clearance and finish quality
• No. 2 Morse Taper shank for secure spindle engagement
• Solid pilot design eliminates interchangeable pilot fitment issues

Compatibility

Designed as an OEM-style replacement or standard tooling option for drill presses and milling machines equipped with a No. 2 Morse Taper spindle; sized for use with 1/2 inch socket head or similar fasteners.

Installation Notes

Installation is performed by machinists using a drill press or milling machine with a No. 2 Morse Taper spindle socket. Ensure the machine is fully de-energized and the spindle is at rest before seating or removing the taper shank. Clean the spindle bore and taper shank of chips and oil before seating to ensure positive engagement. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain bore quality.