Value Collection 08909442 Counterbore Pilot Carbon Steel

Product Description

The VALUE COLLECTION 08909442 is a counterbore pilot used to guide counterboring operations and ensure accurate, concentric seat cuts in metal workpieces. The pilot fits into a pre-drilled hole and centers the counterbore cutter, preventing walking and producing clean, flat-bottomed recesses for socket-head fasteners and similar hardware. Constructed from carbon steel with a bright, uncoated finish, this pilot features an 11/16 inch head diameter and a 1/2 inch shank diameter. Machinists and metalworking professionals install this type of pilot in manual or CNC machining environments where precision counterbore alignment is required.

This counterbore pilot is suited for use in machine shops, fabrication facilities, and maintenance operations where socket-head cap screws, bolts, or similar fasteners must be recessed flush or below a workpiece surface. It is appropriate for use in ferrous metals and general-purpose steel applications. The carbon steel construction makes it a practical choice for production and repair work where tool cost and availability are key considerations. Sold individually, it is compatible with standard counterbore tool bodies that accept a 1/2 inch shank pilot.

Key Features

• 11/16 inch head diameter for accurate counterbore seat alignment
• 1/2 inch shank diameter for secure seating in compatible counterbore holders
• Carbon steel construction suitable for general-purpose metalworking
• Bright, uncoated finish for easy inspection and standard shop use
• Sold as a single unit for targeted replacement or tooling builds

Compatibility

Designed as an OEM-style replacement or supplemental pilot for standard counterbore tool bodies that accept a 1/2 inch shank diameter pilot.

Installation Notes

Installation is performed by machinists or tool-and-die professionals using standard shop equipment. Ensure the machine spindle is fully de-energized and the tool holder is secured before inserting or removing the pilot. The pilot should seat fully and without play in the counterbore body before beginning any cutting operation. Inspect the pilot for wear or damage before each use to maintain bore concentricity.