Value Collection 08908329 Counterbore Pilot Carbon Steel

Product Description

The VALUE COLLECTION 08908329 is a counterbore pilot used to guide counterbore cutters during precision hole finishing operations. This tool fits into the lead hole and keeps the cutter centered while the counterbore creates a flat-bottomed recess for fastener heads or washers. Constructed from carbon steel with a bright, uncoated finish, it offers reliable rigidity for general-purpose machining and metalworking applications. The pilot measures 0.5 inches in head diameter and 0.4375 inches in shank diameter. Machinists, tool-and-die workers, and maintenance technicians working in metal fabrication or mechanical assembly are the typical end users of this type of pilot.

Counterbore pilots are used wherever a counterbore cutter must be aligned precisely with an existing drilled hole. Common applications include creating recesses for socket head cap screws, carriage bolts, and similar fasteners in steel, aluminum, and other metals. This pilot suits light to medium-duty bench work and is appropriate for both job-shop production and maintenance-repair-overhaul settings. It is sold individually and is compatible with counterbore tools that accept the corresponding pilot diameter.

Key Features

• 0.5-inch head diameter provides stable seating in the counterbore body
• 0.4375-inch shank diameter for precise centering in the lead hole
• Carbon steel construction for rigidity during cutting operations
• Bright, uncoated finish suitable for general-purpose metalworking
• Compact and lightweight at 0.18 pounds for easy handling at the bench

Compatibility

Designed as a replacement or spare counterbore pilot for counterbore cutters requiring a 0.4375-inch shank pilot and 0.5-inch head diameter. Verify shank and head diameter against your counterbore cutter specification before ordering.

Installation Notes

Counterbore pilots are installed and removed by hand or with a suitable pin punch — no power tools are required for pilot changes. Ensure the machine spindle is fully stopped and power is off before inserting or removing the pilot. Inspect the pilot shank for wear or scoring before each use, as a damaged pilot can cause cutter misalignment and poor hole quality. Follow applicable shop safety and machine-guarding practices when operating counterbore tooling.