Value Collection 08907644 Counterbore Pilot Carbon Steel

Product Description

The VALUE COLLECTION 08907644 is a counterbore pilot used to guide counterbore cutters during precision boring operations on metal workpieces. With a 1 inch head diameter and a 3/8 inch shank diameter, this pilot fits into the pilot hole to center and stabilize the counterbore cutter as it seats fastener heads flush or below the surface. Constructed from carbon steel with a bright, uncoated finish, it delivers the rigidity needed for accurate, repeatable counterboring in machine shop and fabrication environments. Machinists, toolmakers, and maintenance technicians typically use this type of pilot when preparing bolt or screw seat recesses in steel, aluminum, and similar workpiece materials.

Counterbore pilots of this type are used in manual milling machines, drill presses, and CNC setups where a guided counterbore is required to produce a flat-bottomed recess for socket head cap screws, hex bolts, or similar fasteners. The 3/8 inch shank diameter fits standard counterbore tool bodies that accept this shank size. This part is sold as an individual unit and is suited for both production runs and one-off maintenance or repair operations in industrial and commercial settings.

Key Features

• 1 inch head diameter for accurate counterbore guidance and fastener seat alignment
• 3/8 inch shank diameter fits compatible counterbore cutter bodies
• Carbon steel construction provides rigidity for consistent boring performance
• Bright, uncoated finish allows for easy visual inspection of wear or damage
• Sold as a single unit for direct replacement or tooling inventory replenishment

Compatibility

Designed as a replacement or spare counterbore pilot for use with counterbore cutter bodies that accept a 3/8 inch shank diameter pilot.

Installation Notes

Counterbore pilots should be installed by a machinist or qualified technician familiar with rotating cutting tools and machine tool safety practices. Ensure the machine is fully powered down and the spindle is locked before inserting or removing the pilot from the counterbore body. Verify that the pilot shank diameter matches the tool body bore before use, and inspect the pilot for wear or damage prior to each use to avoid deflection or workpiece damage.