Value Collection GH8790537 Counterbore 53/64 in 3 Flute Hss

Product Description

The VALUE COLLECTION GH8790537 is an interchangeable pilot counterbore designed for precision recess cutting in metalworking and machining applications. Built from high-speed steel with a bright, polished finish, this tool accepts a 1/4 inch pilot shank and features a 53/64 inch counterbore diameter. The straight shank measures 3/4 inch in diameter and 3-7/8 inches in length, with an overall length of 5-3/8 inches. Three right-hand cutting flutes deliver clean, consistent material removal. This tool is typically installed and operated by machinists and tool-and-die professionals working with drill presses, milling machines, or CNC setups.

This counterbore is suited for creating flat-bottomed recesses for socket head cap screws and similar fasteners in ferrous and non-ferrous metals. The interchangeable pilot design allows flexibility across different pilot sizes, making it a practical choice for production shops and maintenance environments where multiple fastener diameters are in use. The bright, uncoated finish is standard for general-purpose high-speed steel tooling in non-abrasive materials.

Key Features

• 53/64 inch counterbore diameter for precise recess sizing
• 3 right-hand cutting flutes for smooth, efficient material removal
• High-speed steel construction for durability across common machining materials
• Interchangeable pilot accepts 1/4 inch pilot shank
• 3/4 inch straight shank for standard chuck compatibility
• Bright, polished finish suitable for general-purpose use

Compatibility

Designed as an interchangeable pilot counterbore compatible with 1/4 inch pilot shanks; suitable for use in standard drill press and milling machine chucks accepting a 3/4 inch straight shank.

Installation Notes

Installation is performed by qualified machinists. Secure the straight shank firmly in a drill press or milling machine chuck before operation. Ensure the correct pilot is seated and locked before engaging the workpiece. Apply appropriate cutting fluid for the workpiece material to extend tool life and improve finish quality.