Value Collection 08902207 Counterbore Pilot 5/16 in

Product Description

The VALUE COLLECTION 08902207 is a counterbore pilot used to guide counterbore cutters during precision boring operations. The pilot fits a 1/8 inch shank diameter and is sized to a 5/16 inch head diameter, allowing it to seat correctly in the counterbore and keep the cutter aligned with the pilot hole. Constructed from carbon steel with a bright uncoated finish, this pilot is suited for general-purpose machining in metal fabrication, maintenance, and repair environments. Machinists, toolmakers, and industrial maintenance technicians are the primary users of this type of tooling accessory.

Counterbore pilots are used wherever a flat-bottomed recess must be cut concentrically around an existing hole, such as when seating socket head cap screws flush or below a workpiece surface. The 08902207 is appropriate for bench-top drill press work, milling operations, and hand-held drilling where a matching counterbore cutter requires a 1/8 inch pilot shank. It is sold individually and is suited for low-volume repair work as well as production environments where spare pilots are kept on hand.

Key Features

• 5/16 inch head diameter for proper counterbore seating and concentricity
• 1/8 inch shank diameter compatible with standard counterbore cutter pilot bores
• Carbon steel construction provides adequate hardness for general-purpose boring applications
• Bright uncoated finish allows visual inspection for wear or damage
• Sold as a single unit for replacement or tooling inventory purposes

Compatibility

Designed as a replacement or spare counterbore pilot for standard counterbore cutter sets requiring a 1/8 inch shank pilot with a 5/16 inch head diameter.

Installation Notes

Installation is performed by machinists or maintenance technicians familiar with counterboring operations. Ensure the mating counterbore cutter and spindle are fully de-energized and locked out before inserting or removing the pilot. The pilot should seat firmly in the counterbore cutter without play before beginning any cutting operation. Inspect the pilot for wear or deformation before each use.