Value Collection 08909400 Counterbore Pilot Carbon Steel

Product Description

The VALUE COLLECTION 08909400 is a counterbore pilot used to guide counterboring tools during machining operations. The pilot centers the cutting tool over a pre-drilled hole to ensure accurate, concentric counterbores in metal workpieces. It features a 0.625-inch head diameter and a 0.5-inch shank diameter, constructed from bright, uncoated carbon steel for solid performance in general-purpose shop environments. Machinists and toolroom technicians install this pilot when precision alignment is required for socket head cap screw recesses and similar counterbore applications.

This counterbore pilot is suited for use in machine shops, maintenance facilities, and production environments where counterboring operations are performed on ferrous and compatible non-ferrous materials. It is typically used with interchangeable counterbore sets where the pilot and cutter are separate components, allowing one cutter body to accept multiple pilot sizes depending on hole diameter requirements.

Key Features

• 0.625-inch head diameter for precise counterbore alignment
• 0.5-inch shank diameter for standard tool body compatibility
• Carbon steel construction for general-purpose machining durability
• Bright uncoated finish for straightforward inspection and dimensional verification
• Interchangeable pilot design compatible with modular counterbore systems

Compatibility

Designed as an OEM-style replacement or supplemental pilot for interchangeable counterbore tool systems that accept a 0.5-inch shank diameter pilot.

Installation Notes

Installation is performed by machinists or toolroom technicians as part of counterbore setup. Ensure the machine spindle is fully powered down and at rest before inserting or removing the pilot. The pilot should seat securely in the counterbore body before initiating any cutting operation. Verify pilot fit and concentricity before beginning the counterboring pass to prevent tool walkout or hole misalignment.