Value Collection 08907685 Counterbore Pilot Carbon Steel

Product Description

The VALUE COLLECTION 08907685 is a counterbore pilot used to guide counterbore cutters during precision drilling and spotfacing operations. The pilot aligns with the pre-drilled hole to keep the counterbore centered and running true. It features a 1-1/16 inch head diameter and a 3/8 inch shank diameter, making it suitable for standard counterbore tool bodies in that shank size. Constructed from carbon steel with a bright, uncoated finish, this pilot delivers reliable rigidity for general-purpose machining work. It is a direct-fit replacement component for counterbore sets and is sold individually as a single-piece unit.

This counterbore pilot is used in machine shops, maintenance facilities, and manufacturing environments where bolt-hole counterboring is performed. It is suited for use in drill presses, milling machines, and hand-held drill setups where a pilot is needed to maintain concentricity between the counterbore and an existing hole. Typical applications include spotfacing bolt seat surfaces and enlarging hole entrances to accept socket head cap screws or similar fasteners. The bright finish is appropriate for ferrous and non-ferrous workpieces in standard shop conditions.

Key Features

• 1-1/16 inch head diameter for standard counterbore fitment
• 3/8 inch shank diameter for compatibility with matching counterbore tool bodies
• Carbon steel construction provides rigidity for general-purpose drilling applications
• Bright, uncoated finish suitable for standard shop use
• Sold as a single-piece unit for direct replacement or supplemental use

Compatibility

Designed as a replacement or supplemental pilot for counterbore tool bodies accepting a 3/8 inch shank pilot with a 1-1/16 inch head diameter.

Installation Notes

Installation is typically performed by machinists or maintenance technicians. Before inserting or replacing the pilot, ensure the machine spindle is fully stopped and locked out per applicable lockout/tagout procedures. The pilot should slide snugly into the counterbore body without play; a loose-fitting pilot will cause runout and an off-center bore. Inspect the pilot for wear or damage before each use and replace if scoring or deformation is present.