Harvey Tool 36260-C3 Corner Radius End Mill 1/4 in 4 Flute

Product Description

The HARVEY TOOL 36260-C3 is a single-end corner radius end mill designed for precision milling in steel, stainless steel, cast iron, non-ferrous metals, and composite materials. Built from solid carbide and coated with AlTiN via a PVD process, this tool handles both roughing and finishing passes. It carries a 1/4 inch mill diameter, a 3/4 inch length of cut, and a 0.06 inch corner radius, making it well suited for miniature and tight-tolerance work. The 4-flute, right-hand spiral geometry and 30-degree helix angle promote efficient chip evacuation and a consistent surface finish across a wide range of workpiece materials.

This end mill fits into the Harvey Tool Miniature End Mills - Corner Radius - Stub and Standard series. It is intended for use in CNC machining centers and manual mills equipped with compatible toolholders that accept a 1/4 inch straight cylindrical shank. Typical applications include contouring, slotting, and profiling where a defined corner radius is required to reduce stress concentrations or meet print tolerances. The centercutting design allows plunge entry. Machinists working in job shop, aerospace, medical, and general manufacturing environments regularly select this geometry for P, M, K, N, and O material classifications.

Key Features

• Solid carbide construction provides rigidity and wear resistance in hard and abrasive materials
• AlTiN PVD coating extends tool life in high-heat ferrous and stainless steel cuts
• 0.06 inch corner radius with a tolerance of plus or minus 0.001 inch for consistent part geometry
• Centercutting design permits direct plunge entry without a pre-drilled hole
• Right-hand cut, right-hand flute spiral with normal pitch for stable, predictable cutting forces
• Rated for roughing and finishing in a single tool, reducing changeover time

Compatibility

Designed for use with standard toolholders accepting a 1/4 inch straight cylindrical shank. Compatible with primary workpiece materials including steel, stainless steel, cast iron, non-ferrous metals, and composites (ISO material codes P, M, K, N, O).

Installation Notes

Installation should be performed by a qualified machinist following the toolholder manufacturer's clamping specifications. Ensure the machine spindle is fully stopped and the control is in an e-stop or lock-out state before inserting or removing the end mill. Use a calibrated collet or shrink-fit holder appropriate for a 1/4 inch shank diameter to minimize runout. Do not exceed the clamping depth recommended by the toolholder manufacturer, and verify shank engagement before beginning any cut cycle.