Value Collection 08903221 Counterbore Pilot Carbon Steel

Product Description

The VALUE COLLECTION 08903221 is a counterbore pilot used to guide counterbore cutters during precision machining operations. The pilot fits into a drilled hole and centers the counterbore cutter, ensuring accurate seat depth and concentricity. It features an 11/32-inch head diameter and a 5/32-inch shank diameter, machined from carbon steel with a bright, uncoated finish. This type of pilot is a standard consumable in machine shops, maintenance facilities, and manufacturing environments where fastener seating requires clean, repeatable counterbore geometry.

Counterbore pilots are used in metalworking and light fabrication applications where socket head cap screws or similar fasteners must sit flush or below a workpiece surface. The 5/32-inch shank diameter determines the pilot bore size this tool is suited for, making it appropriate for small-diameter counterbore sets. It is typically used with a matching counterbore body in manual or CNC milling setups, drill presses, or hand-held power tools.

Key Features

• 11/32-inch head diameter for proper counterbore seat engagement
• 5/32-inch shank diameter for precise pilot hole alignment
• Carbon steel construction for durability in general machining applications
• Bright, uncoated finish suitable for standard shop use
• Sold individually, compatible with standard interchangeable counterbore systems

Compatibility

Designed as an OEM-style replacement pilot for standard interchangeable counterbore cutter sets requiring a 5/32-inch shank pilot. Verify shank diameter and head diameter against your counterbore body specifications before installation.

Installation Notes

Counterbore pilots are installed and removed by machinists or tooling technicians using appropriate set screws or locking mechanisms on the counterbore body. Always secure the workpiece and power down the machine before changing pilots. Inspect the pilot for wear or damage before each use, as a worn pilot will compromise counterbore concentricity. Follow standard shop safety practices and applicable facility procedures when operating cutting tools.