Value Collection 08905408 Counterbore Pilot Carbon Steel

Product Description

The VALUE COLLECTION 08905408 is a counterbore pilot designed to guide counterboring tools accurately during machining operations. With a 0.625 inch head diameter and a 0.25 inch shank diameter, this pilot fits standard counterbore tool bodies and ensures concentricity when creating flat-bottomed recesses for socket head cap screws and similar fasteners. Constructed from carbon steel with a bright, uncoated finish, it delivers adequate hardness and dimensional stability for general-purpose shop and field use. Machinists, maintenance technicians, and trade professionals use counterbore pilots to maintain alignment and prevent tool walk during counterboring on metal, wood, and composite substrates.

This counterbore pilot is suited for general machining, fabrication, and maintenance applications where precise counterbore alignment is required. It is appropriate for use in manual drill press setups, CNC operations, and hand-held drilling applications where an existing pilot hole matches the 0.25 inch shank. Typical use cases include preparing bolt seat recesses in metal frames, equipment housings, and structural assemblies common in HVAC equipment fabrication, electrical enclosure work, and plumbing fixture installation.

Key Features

• 0.625 inch head diameter for standard counterbore pilot fitment
• 0.25 inch shank diameter for compatibility with common counterbore tool bodies
• Carbon steel construction provides reliable hardness for general-purpose machining
• Bright, uncoated finish allows visual inspection of wear and surface condition
• Compact and lightweight at 0.12 pounds for easy handling and storage

Compatibility

Designed as a general-purpose replacement or supplemental counterbore pilot for counterbore tool sets accepting a 0.25 inch shank and a 0.625 inch head diameter.

Installation Notes

Installation and use of this counterbore pilot should be performed by qualified machinists or maintenance technicians familiar with rotary cutting tools. Secure the pilot firmly in the counterbore tool body before operation and ensure the mating pilot hole is clean and properly sized to the 0.25 inch shank. Always power down and lock out any drill press or milling machine before changing pilots or inspecting tooling. Do not exceed the recommended RPM range for the parent counterbore tool body being used.