Value Collection 08905366 Counterbore Pilot Carbon Steel

Product Description

The VALUE COLLECTION 08905366 is a counterbore pilot used to guide counterbore cutters during precision boring operations on metal workpieces. With a 9/16 inch head diameter and a 1/4 inch shank diameter, this pilot centers the cutting tool over a pre-drilled hole to produce clean, flat-bottomed counterbores for socket head cap screws and similar fasteners. Constructed from carbon steel with a bright uncoated finish, it delivers adequate hardness for general-purpose machining applications. Machinists, maintenance technicians, and fabricators use this pilot in drill press and milling machine setups.

This counterbore pilot is suited for light to medium-duty metal fabrication and maintenance work where accurate fastener seat geometry is required. The 1/4 inch shank fits standard counterbore tool holders, and the 9/16 inch head diameter corresponds to common socket head cap screw counterbore sizing. It is appropriate for use in job shops, manufacturing facilities, and field maintenance environments where controlled boring depth and seat flatness are priorities.

Key Features

• 9/16 inch head diameter for accurate counterbore centering
• 1/4 inch shank diameter fits standard counterbore holders
• Carbon steel construction provides durability for general-purpose machining
• Bright uncoated finish suitable for standard metal cutting applications
• Compact and lightweight at 0.09 pounds for easy handling and storage

Compatibility

Designed as a standard replacement or supplemental pilot for counterbore tool sets accepting a 1/4 inch shank pilot with a 9/16 inch head diameter.

Installation Notes

Installation and use should be performed by a qualified machinist or maintenance technician familiar with rotating cutting tools. Ensure the drill press or milling machine spindle is fully stopped and locked out before inserting or removing the pilot. Secure the pilot firmly in the counterbore body before beginning the cut to prevent lateral movement that could damage the workpiece or tool. Always wear appropriate eye protection when operating counterbore tooling.