Value Collection GH8840225 Pilot Counterbore 11/32 in

Product Description

The VALUE COLLECTION GH8840225 is a 4-flute interchangeable pilot counterbore designed for precision spot-facing and counterboring operations in metal fabrication and aerospace-style applications. Built from high-speed steel with a bright, uncoated polished finish, this tool delivers clean, accurate cuts in a range of ferrous and non-ferrous materials. The straight shank measures 1/4 inch in diameter and accepts a 3/32-inch pilot shank for guided, repeatable bore alignment. With a 2-3/8-inch overall length and right-hand cutting direction, it suits bench drill presses, CNC machines, and handheld drill applications where controlled material removal is required.

This counterbore is configured in the aircraft style, making it well-suited for structural assembly work, aerospace maintenance, and general metalworking tasks that demand consistent counterbore depth and concentricity. It is commonly used by machinists, maintenance technicians, and fabricators working on fastener seating operations where a flat-bottomed recess is needed above a through-hole. The 11/32-inch counterbore diameter accommodates standard fastener head sizing in light industrial and aircraft-grade assembly scenarios. The interchangeable pilot design allows for flexibility when working with varying pilot diameters across a single job.

Key Features

• 11/32-inch counterbore diameter for precise flat-bottom recessing
• 4-flute geometry for smooth chip evacuation and improved surface finish
• High-speed steel construction provides durability across ferrous and non-ferrous materials
• Bright, uncoated polished finish suited for general-purpose metal cutting
• Straight 1/4-inch shank for broad chuck compatibility
• Interchangeable 3/32-inch pilot shank supports guided bore alignment
• Aircraft style design meets the precision demands of structural and aerospace maintenance work

Compatibility

Designed as an OEM-style interchangeable pilot counterbore for use with standard straight-shank drill chucks and drill presses accepting a 1/4-inch shank, with a 3/32-inch compatible pilot shank diameter.

Installation Notes

This tool is typically installed and operated by machinists or maintenance technicians using a drill press, milling machine, or handheld power drill with an appropriate chuck. Ensure the workpiece is securely fixtured and the spindle is at a controlled speed appropriate for the material being counterbored. Power down and de-energize all equipment before changing pilots or securing the shank in the chuck. Use appropriate cutting fluid for extended tool life when working with harder materials.