Harvey Tool 938216-C3 Back Chamfer Cutter 1/4 in 5 Flute

Product Description

The HARVEY TOOL 938216-C3 is a solid carbide back chamfer cutter designed for deburring and chamfering the back side of holes, slots, and cross-drilled features without repositioning the workpiece. The cutter head measures 1/4 inch in diameter with a 90-degree included angle and a 0.044-inch chamfer width. Five flutes provide efficient chip evacuation and a smooth finish in ferrous and non-ferrous materials. An AlTiN coating extends tool life in high-heat cutting environments. This tool is used by machinists and toolmakers on CNC machining centers and manual mills where back-side edge preparation is required.

This back chamfer cutter is suited for production and job-shop environments handling precision components that require consistent back-edge breaks on through-holes and intersecting bores. It fits standard 1/4-inch toolholders and collet chucks, making it easy to integrate into existing setups. The reduced neck diameter of 0.156 inches allows reach into deeper bores while keeping the shank rigid. Typical applications include aerospace, automotive, and general metalworking where burr removal and chamfer consistency are critical to part function and assembly.

Key Features

• 90-degree included angle delivers consistent back chamfers on through-holes and cross-drilled features
• 0.044-inch chamfer width suitable for fine edge-break work on precision components
• 5-flute geometry for smooth cutting action and efficient chip removal
• Solid carbide construction for rigidity and wear resistance
• AlTiN coating improves heat resistance and tool longevity in ferrous materials
• 0.156-inch neck diameter provides access to deeper bore locations

Compatibility

Designed for use in standard 1/4-inch collet chucks and toolholders on CNC machining centers and manual milling machines. Confirm bore diameter and reach requirements match the 0.156-inch neck diameter and 2-1/2-inch overall length before installation.

Installation Notes

Installation is performed by qualified machinists following standard toolroom practices. Secure the 1/4-inch shank fully into the collet or toolholder and verify runout before cutting. Power down the spindle completely before changing or inspecting the cutter. Do not exceed the tool manufacturer's recommended speeds and feeds for the workpiece material and coating type.