Value Collection 08909947 Counterbore Pilot Carbon Steel

Product Description

The VALUE COLLECTION 08909947 is a counterbore pilot used to guide counterboring tools during machining operations. The pilot locates into a pre-drilled hole to keep the counterbore cutter centered and running true, reducing runout and preventing damage to the workpiece. It features a 1-7/8 inch head diameter and a 1/2 inch shank diameter. Constructed from carbon steel with a bright, uncoated finish, this pilot is suited for general-purpose shop use in metalworking and fabrication environments. Machinists and tool-and-die technicians are the primary users of this type of tooling component.

This counterbore pilot is intended for use in manual or CNC machining setups where a counterbored seat is required for socket head cap screws, bolts, or similar fasteners. It is appropriate for use on ferrous and non-ferrous materials in both production and job-shop settings. The 1/2 inch shank diameter allows it to be held in standard toolholders or counterbore bodies designed for that shank size. Sold as a single unit, it is a direct-replacement or supplemental pilot for existing counterbore sets.

Key Features

• 1-7/8 inch head diameter provides a wide, stable seating surface for the counterbore cutter
• 1/2 inch shank diameter fits standard counterbore bodies and toolholders
• Carbon steel construction offers adequate hardness for general-purpose counterboring applications
• Bright, uncoated finish allows for visual inspection of wear and surface condition
• Sold individually, allowing replacement of a single worn pilot without purchasing a full set

Compatibility

Designed as a replacement or spare pilot for counterbore tools accepting a 1/2 inch shank pilot with a 1-7/8 inch head diameter. Verify compatibility with your specific counterbore body before installation.

Installation Notes

Installation is performed by machinists or toolroom technicians familiar with counterboring operations. Ensure the machine spindle is fully powered down and at rest before changing or seating a pilot. The pilot should seat snugly into the counterbore body without play; a loose-fitting pilot will cause runout and poor surface finish. Consult the counterbore manufacturer's guidelines for proper pilot retention and replacement intervals.