Value Collection GH8815185 Counterbore 9/32 in 3 Flute

Product Description

The VALUE COLLECTION GH8815185 is a 3-flute interchangeable pilot counterbore designed for precision metal cutting in drilling and boring operations. Built from cobalt steel with a bright, uncoated finish, this tool delivers the heat resistance and edge retention needed for harder workpiece materials. The straight shank measures 17/64 inches in diameter with a shank length of 3.0625 inches, and the tool runs at an overall length of 3.8125 inches. The counterbore diameter is 9/32 inches, compatible with a 3/32-inch pilot shank. Right-hand cutting direction. Installed by machinists, toolroom technicians, and precision metalworking professionals.

This counterbore is suited for ferrous and harder non-ferrous materials where standard high-speed steel tooling may wear prematurely. The interchangeable pilot design allows the pilot to be swapped out independently of the body, making it practical for production environments and job shops where multiple pilot sizes are required. Typical applications include spotfacing bolt holes, seating fastener heads flush or below a surface, and preparing holes in structural or aerospace-grade metals. The cobalt construction makes it a reliable choice when working with stainless steel, alloy steel, and similar hard-to-machine materials.

Key Features

• Cobalt steel construction for improved heat and wear resistance in hard materials
• Interchangeable pilot system accepts 3/32-inch pilot shank for flexible setup
• 3-flute geometry supports efficient chip evacuation and smooth cutting action
• Bright, uncoated finish maintains dimensional accuracy without coating buildup
• Right-hand cutting direction, standard for most vertical and horizontal machining setups
• Straight shank for direct chuck or collet mounting without adapters

Compatibility

Designed for use with interchangeable pilot counterbore systems accepting a 3/32-inch pilot shank diameter. Confirm pilot shank compatibility with your existing pilot set before installation.

Installation Notes

This tool is installed by machinists and metalworking technicians using standard drill presses, milling machines, or CNC machining centers. Secure the straight shank firmly in a chuck or collet before operation and verify the pilot is fully seated and locked before cutting. Use appropriate cutting fluid for the workpiece material to extend tool life. Do not exceed the recommended feed and speed parameters for cobalt tooling on the specific material being machined.