Value Collection 08905325 Counterbore Pilot Carbon Steel

Product Description

The VALUE COLLECTION 08905325 is a counterbore pilot used to guide counterboring operations with precision alignment during machining. The pilot features a 0.5 inch head diameter and a 0.25 inch shank diameter, making it suited for use in standard counterbore tool setups. Constructed from carbon steel with a bright, uncoated finish, this pilot delivers reliable performance in light to medium-duty machining environments. Machinists and tool-and-die professionals install this type of pilot to maintain concentricity between a drilled hole and its counterbore, reducing runout and improving seat quality on fastener applications.

This counterbore pilot is appropriate for use in manual mills, drill presses, and CNC machining centers where precise counterbore alignment is required. It is commonly used in fabrication shops, maintenance facilities, and production machining operations. The 0.25 inch shank diameter fits standard counterbore bodies designed for that shank size. Typical applications include creating flat-bottomed recesses for socket head cap screws and similar fasteners in metal workpieces.

Key Features

• 0.5 inch head diameter for proper counterbore seat engagement
• 0.25 inch shank diameter fits standard counterbore tool bodies
• Carbon steel construction for light to medium-duty machining use
• Bright, uncoated finish for straightforward inspection and measurement
• Compact and lightweight at 0.12 pounds for easy handling and storage

Compatibility

Designed as a replacement or spare counterbore pilot for standard counterbore sets and bodies accepting a 0.25 inch shank diameter pilot with a 0.5 inch head diameter.

Installation Notes

Installation is performed by machinists as part of a counterbore tool assembly. Before installing or changing pilots, ensure the machine is fully powered down and the spindle is at a complete stop. The pilot should be seated securely in the counterbore body per the tool manufacturer guidelines before beginning any cutting operation. Follow applicable shop safety procedures and wear appropriate eye protection when operating cutting tools.