Value Collection GH8794034 Counterbore Set 7 Piece Hss

Product Description

The VALUE COLLECTION GH8794034 is a 7-piece interchangeable pilot counterbore set designed for creating flat-bottomed recesses in metal workpieces to seat socket-head cap screws and similar fasteners flush or below the surface. Each counterbore features a 3-flute design with a straight shank and a bright polished finish. The cutting edges are ground from high speed steel (HSS), providing durability across a range of ferrous and non-ferrous materials. The interchangeable pilot system allows a single counterbore body to accept different pilot diameters, reducing tooling costs and setup time. This set weighs 2.72 pounds and suits machine shops, maintenance facilities, and fabrication environments.

This counterbore set is suited for use in drill presses, milling machines, and CNC machining centers where precision recess cutting is required. Standard pilot sizing ensures compatibility with common fastener dimensions. The 7-piece configuration covers multiple fastener sizes in a single kit, making it a practical choice for shops handling varied workloads. Machinists, tool-and-die makers, and general maintenance technicians are the primary users of this type of tooling.

Key Features

• 7-piece set covers multiple counterbore sizes in a single kit
• 3-flute geometry for efficient chip evacuation and smooth cutting action
• Interchangeable pilot design accommodates different pilot diameters without replacing the full tool
• High speed steel construction for durability in ferrous and non-ferrous materials
• Straight shank for direct chuck mounting on drill presses and milling machines
• Bright polished finish reduces friction and aids chip clearance
• Standard pilot sizing aligns with common socket-head cap screw dimensions

Compatibility

Designed as a standard-pilot interchangeable counterbore set suitable for use with common socket-head cap screws and similar fasteners across general machining and fabrication applications.

Installation Notes

Counterbores should be installed and operated by qualified machinists or maintenance technicians familiar with rotating cutting tools. Secure the straight shank firmly in a drill chuck or collet before operation, and ensure the workpiece is clamped securely to prevent movement during cutting. Always use appropriate cutting fluid for the workpiece material to extend tool life and improve finish quality. Inspect pilots for wear or damage before each use and replace pilots if fit in the counterbore body is loose.