Value Collection GH8790172 Counterbore 17/64 in 3 Flute Hss

Product Description

The VALUE COLLECTION GH8790172 is a 3-flute interchangeable pilot counterbore designed for precision counterboring operations in metal fabrication, machining, and assembly work. Built from high speed steel with a bright, uncoated polished finish, this tool delivers clean, accurate seats for socket head and hex cap fasteners. The straight shank measures 17/64 inches in diameter and 3-1/16 inches in length, with an overall length of 3-13/16 inches. A right-hand cutting direction and three-flute geometry combine to produce smooth, chatter-resistant cuts. Machinists and toolroom professionals working in job shops, maintenance facilities, and production environments will find this counterbore well-suited to standard and repetitive counterboring tasks.

This counterbore is intended for use in standard drill press, milling machine, or hand-held power tool setups where a straight shank is required. The interchangeable pilot design accepts a 3/32 inch pilot shank, allowing the tool to guide accurately off an existing drilled hole. It is suited to counterboring operations in steel, aluminum, brass, and similar machinable materials. The bright finish indicates no additional coating, making it appropriate for general-purpose use where cutting fluid or light oil is applied during operation.

Key Features

• Interchangeable pilot design accepts a 3/32 inch pilot shank for precise hole alignment
• 3-flute geometry reduces chatter and promotes smooth cutting action
• High speed steel construction provides durability across a range of machinable metals
• Bright, uncoated polished finish suitable for use with standard cutting fluids
• Straight shank compatible with standard drill chucks and collet holders
• Right-hand cutting direction for use with conventional drill press and milling setups

Compatibility

Designed as an OEM-style interchangeable pilot counterbore for use in drill press, milling machine, and power tool setups requiring a straight shank and 3/32 inch pilot shank diameter.

Installation Notes

Installation is performed by machinists or toolroom technicians using a drill press, milling machine, or compatible power tool. Ensure the machine is fully powered down and the spindle is locked before changing tooling. Secure the straight shank firmly in a properly sized chuck or collet to prevent slippage during operation. Apply cutting fluid or light cutting oil to extend tool life and improve surface finish quality.