Value Collection GH8790461 Counterbore 23/32in 3 Flute Hss

Product Description

The VALUE COLLECTION GH8790461 is a 3-flute interchangeable pilot counterbore designed for precise counterboring operations in metalworking applications. Built from high speed steel with a bright, uncoated polished finish, this tool delivers reliable cutting performance across a range of materials. It features a 23/32-inch counterbore diameter and a 1/2-inch straight shank, with an overall length of 5-3/8 inches and a shank length of 3-7/8 inches. The interchangeable pilot design accepts a 1/4-inch pilot shank, allowing flexibility across different fastener sizes without replacing the entire tool body. Right-hand cutting direction suits standard drill press and milling machine setups.

This counterbore is suited for machinists, toolroom technicians, and maintenance professionals performing spot-facing or counterboring work on steel, aluminum, and other common shop materials. Typical applications include creating recessed seating for socket head cap screws and other fasteners in production and repair environments. The straight shank allows direct mounting in standard drill chucks and collet holders without the need for special adapters.

Key Features

• 23/32-inch counterbore diameter for accurate fastener seat sizing
• 1/2-inch straight shank for compatibility with standard drill chucks and collet holders
• 3-flute geometry provides smooth cutting and efficient chip evacuation
• High speed steel construction for durability across common shop materials
• Bright, uncoated polished finish for reduced friction during cutting
• Interchangeable 1/4-inch pilot shank for flexible fastener fitment

Compatibility

Designed as an OEM-style replacement or standard toolroom counterbore for use with 1/4-inch interchangeable pilots in drill press, milling machine, and hand-held drilling setups.

Installation Notes

Installation and use of this counterbore should be performed by qualified machinists or maintenance technicians familiar with rotary cutting tools. Secure the straight shank firmly in a properly sized chuck or collet before operation, and verify the pilot is fully seated and locked before engaging the workpiece. Always power down and de-energize the machine before changing pilots or removing the tool. Follow applicable shop safety standards and machine manufacturer guidelines for speed and feed selection based on workpiece material.