Hertel 331-010060 Countersink 1 in 82 Degree 1 Flute Alloy Steel

Product Description

The HERTEL 331-010060 is a single-flute countersink designed for precise, controlled chamfering in metal fabrication and machining applications. The tool features a 1-inch head diameter with an 82-degree included angle, making it well-suited for standard flat-head fastener seating. The 0.5-inch straight-cylindrical shank provides secure chuck engagement on drill presses, milling machines, and CNC setups. The bright, uncoated alloy steel construction is optimized for cutting through alloy steel, cast iron, and glass-reinforced plastic. Machinists and toolroom technicians are the primary users of this countersink.

This countersink is used in job shop, maintenance, and production machining environments where clean, accurately angled seat profiles are required for flat-head fasteners. Its single-flute geometry reduces chatter and promotes a smooth surface finish in harder materials such as alloy steel and cast iron. The tool is equally applicable in fabrication shops working with structural components or enclosures that incorporate glass-reinforced plastic panels. No pilot is included, so proper work-holding and center-punching are standard practice before use.

Key Features

• 1-inch head diameter with 82-degree included angle for standard flat-head fastener seating
• Single-flute design reduces chatter and promotes a clean surface finish in tough materials
• 0.5-inch straight-cylindrical shank for compatibility with standard drill chucks and collets
• Bright, uncoated alloy steel construction — no coating to crack or peel under load
• Rated for alloy steel, cast iron, and glass-reinforced plastic workpieces
• Single-end tool with no pilot, suitable for use with pre-drilled or center-punched holes

Compatibility

Designed for use with alloy steel, cast iron, and glass-reinforced plastic workpieces. The straight-cylindrical shank fits standard drill chucks and collet holders accepting a 0.5-inch shank diameter.

Installation Notes

This tool is installed and operated by machinists, toolroom technicians, or experienced fabricators using a drill press, milling machine, or CNC spindle. Always secure the workpiece firmly before operation and ensure the spindle is at a complete stop before changing tooling. Use appropriate cutting fluid or dry-cutting technique as required by the workpiece material. Inspect the cutting edge before each use and remove from service if chipping or wear is detected.