Value Collection 08909681 Counterbore Pilot Carbon Steel

Product Description

The VALUE COLLECTION 08909681 is a counterbore pilot used to guide counterboring tools during precision hole-finishing operations. The pilot features a 1-1/16 inch head diameter and a 1/2 inch shank diameter, providing a stable interface between the cutting tool and the workpiece. Constructed from carbon steel with a bright, uncoated finish, this pilot is suited for general-purpose metalworking and machining applications. Machinists and tool-and-die professionals install this type of pilot to maintain concentricity when enlarging or finishing a bored hole to accept a fastener head or bearing seat.

This counterbore pilot is appropriate for use in manual and CNC machining environments where accurate hole alignment is required. It fits into standard counterboring tool holders that accept a 1/2 inch shank. Typical applications include fabrication shops, maintenance and repair operations, and production machining where consistent hole geometry is critical. The bright finish indicates no additional heat treatment or coating, making it best suited for non-corrosive environments or situations where lubrication is applied at the point of cut.

Key Features

• 1-1/16 inch head diameter for proper counterbore sizing
• 1/2 inch shank diameter for standard tool holder compatibility
• Carbon steel construction provides adequate rigidity for general-purpose machining
• Bright, uncoated finish allows for visual inspection and easy dimensional verification
• Guides the counterboring cutter to maintain hole concentricity

Compatibility

Designed as a replacement or spare counterbore pilot for standard counterboring tools that accept a 1/2 inch shank pilot. No specific system or model compatibility was provided in the product data.

Installation Notes

Counterbore pilots are installed by machinists working on lathes, milling machines, or drill presses. Before inserting or removing the pilot, power down and lock out the machine per standard lockout/tagout procedures. Ensure the pilot shank is clean and free of burrs before seating it in the counterbore tool to avoid runout. Do not exceed the cutting tool manufacturer's recommended speeds and feeds for the associated counterboring operation.