Value Collection GH8830267 Counterbore 13/32 in 4 Flute Hss

Product Description

The VALUE COLLECTION GH8830267 is a 4-flute interchangeable pilot counterbore designed for precision counterboring in metal fabrication and aerospace maintenance applications. Built from high speed steel with a bright, uncoated finish, this tool accepts a 1/8 inch pilot shank and features a 3/8 inch straight shank for secure chuck retention. The 13/32 inch cutting diameter and 4 inch overall length make it well suited for producing clean, flat-bottomed counterbores in structural and sheet metal components. Right-hand cutting geometry ensures compatibility with standard drill press and milling machine setups. Licensed trades and machining professionals will find this tool performs reliably in both production and repair environments.

This counterbore is intended for aircraft-style counterboring operations where precise socket head cap screw seat preparation is required. The interchangeable pilot design allows the user to swap pilots to match different fastener shank diameters without replacing the body, making it a practical choice for shops and field maintenance crews working across multiple fastener sizes. Typical applications include aluminum airframe work, steel structural fabrication, and general machine shop counterboring tasks requiring consistent recess depth and diameter control.

Key Features

• 13/32 inch counterbore diameter for accurate socket screw seat preparation
• Interchangeable pilot accepts 1/8 inch pilot shank for flexible fastener compatibility
• 4-flute geometry delivers smooth cutting action and reduced chatter in metal
• High speed steel construction provides durability across steel and aluminum workpieces
• Bright uncoated finish allows easy visual inspection of cutting edge condition
• Aircraft-style designation confirms suitability for aerospace and structural maintenance use

Compatibility

Designed as a direct-fit interchangeable pilot counterbore for standard drill press, milling machine, or hand drill setups accepting a 3/8 inch straight shank. Pilot compatibility is sized for 1/8 inch pilot shanks as specified in the product attributes.

Installation Notes

This tool is installed and operated by machinists, aircraft maintenance technicians, and metalworking tradespeople using standard drill press or milling machine equipment. Secure the 3/8 inch straight shank firmly in the chuck or collet before operation, and ensure the interchangeable pilot is fully seated and locked before beginning a cut. Always power down and de-energize the machine before changing pilots or inspecting cutting edges. Follow applicable shop safety standards and use appropriate cutting fluid for the workpiece material to extend tool life and maintain bore quality.