Harvey Tool 67680-C3 Corner Rounding End Mill 1/4 in 4 Flute

Product Description

The HARVEY TOOL 67680-C3 is a double-end corner rounding end mill designed for producing consistent edge radii on ferrous and non-ferrous workpieces in milling applications. Built from solid carbide and coated with AlTiN, it handles elevated cutting temperatures and abrasive materials in demanding shop environments. The 4-flute geometry delivers smooth finishes with controlled chip evacuation. With a 0.08 mm corner radius, a 0.25-inch mill diameter, and a 0.058-inch tip diameter, this tool targets fine-detail edge-breaking and radius profiling on precision components. Machinists and tool-and-die professionals installing this tool should verify spindle runout and holder concentricity before operation.

This end mill fits standard CNC machining centers and manual mills equipped with a 1/4-inch collet or end mill holder. It is suited for edge-rounding passes on mold components, aerospace parts, medical device workpieces, and general precision machined parts where controlled, repeatable corner radii are required. The double-end configuration extends tool life by offering a second usable cutting end. The AlTiN coating makes it a practical choice for hardened steels, stainless, and titanium alloys where heat resistance is critical.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• AlTiN coating provides heat resistance and extends tool life in high-temperature cutting
• Double-end design offers two cutting ends per tool, improving cost efficiency
• 0.08 mm corner radius for fine, repeatable edge rounding on precision parts
• 4-flute configuration delivers improved surface finish and feed rate capability
• Flared corner rounding series geometry maintains consistent radius geometry through the cut

Compatibility

Designed for use in CNC machining centers and mills with a 1/4-inch collet or end mill holder accepting a 1/4-inch shank diameter. Part of the Harvey Tool Corner Rounding End Mills - 2 and 4 Flute - Flared series.

Installation Notes

Installation should be performed by a qualified machinist familiar with rotating cutting tool safety. Power down and lock out the spindle before seating or removing the tool. Use a properly sized collet or end mill holder to ensure full shank engagement and minimize runout. Verify tool projection and clearance before initiating any cutting cycle.