Cleveland C92707 Solid Pilot Counterbore 15/32 in Hss

Product Description

The CLEVELAND C92707 is a solid pilot counterbore designed for precision counterboring operations in ferrous and alloy materials. Built from high-speed steel (HSS) with a bright, uncoated finish, it cuts in the forward direction and carries a 15/32-inch counterbore diameter with a 5/16-inch standard pilot. The straight-cylindrical shank measures 7/16 inch in diameter, and the tool runs 6 inches in overall length. Three flutes provide efficient chip evacuation and a clean bore wall finish. This tool is sized and configured for 5/16-inch socket-head cap screw seating applications in machine, fabrication, and maintenance environments.

This counterbore is suited for use on alloy tool steel, carbon steel, and cast iron workpieces. It is appropriate for manual or CNC machining setups where a flat-bottomed recess is required to seat a fastener head flush or below the workpiece surface. The standard pilot diameter ensures accurate bore alignment with a pre-drilled clearance hole sized for 5/16-inch fasteners. Machinists and tool-and-die technicians working in production shops, job shops, or field maintenance applications will find this a direct fit for standard screw-seating counterbore work.

Key Features

• 15/32-inch counterbore diameter sized for 5/16-inch socket-head cap screw compatibility
• High-speed steel construction for durability across steel, alloy tool steel, and cast iron
• Standard 5/16-inch pilot for accurate bore alignment with pre-drilled clearance holes
• 3-flute geometry supports efficient chip removal and clean bore finish
• Straight-cylindrical 7/16-inch shank fits standard drill press or milling machine collets and chucks
• Bright, uncoated finish suitable for use with cutting fluids on general machining applications

Compatibility

Designed for counterboring operations compatible with 5/16-inch socket-head cap screws. Suitable for workpieces in alloy tool steel, carbon steel, and cast iron.

Installation Notes

This tool is installed and operated by qualified machinists or tool-and-die technicians. Secure the straight shank firmly in a drill press chuck, milling machine collet, or equivalent tool holder before operation. Always reduce spindle speed and apply appropriate cutting fluid when working hardened or tough alloy steels. Inspect the pilot and cutting edges for wear before each use to maintain bore accuracy and prevent tool breakage.