Harvey Tool 42608 Corner Radius End Mill 1/8 in 3 Flute Carbide

Product Description

The HARVEY TOOL 42608 is a miniature solid carbide corner radius end mill designed for precision milling in tight geometries and deep-reach applications. The 42608 features a 1/8 inch cutting diameter with a 0.03 inch corner radius, a 3/16 inch length of cut, and a 1-1/2 inch reach length that keeps the shank well clear of the workpiece in extended-reach setups. Three flutes with a 30-degree right-hand spiral helix deliver a balance of chip evacuation and surface finish. The bright/uncoated finish suits applications where coating buildup tolerance is critical. This tool is suited for machinists and tool-and-die professionals working in high-precision environments.

The 42608 is built for both roughing and finishing operations across a broad range of materials including steel, stainless steel, cast iron, aluminum, non-ferrous metals, composites, and wood. Its stub-flute, long-reach configuration makes it well suited for milling inside pockets, slots, and contoured features where standard-length tools cannot reach without interference. The single-end design and straight cylindrical shank allow direct mounting in standard collet-style toolholders. This series targets CNC machining centers and manual mills running precision miniature work.

Key Features

• 0.03 inch corner radius with a tolerance of plus or minus 0.0010 inch for consistent edge geometry
• 1-1/2 inch reach length enables access to deep pockets and tall workpiece features
• Solid carbide construction provides rigidity and wear resistance across hard and abrasive materials
• 3-flute, 30-degree right-hand helix balances chip clearance with cutting efficiency
• Bright/uncoated finish maintains dimensional accuracy where coating thickness is a factor
• Center-cutting capable, allowing plunge entry without a pre-drilled start hole

Compatibility

Designed for use with standard collet-style toolholders accepting a 1/8 inch straight cylindrical shank. Suitable for CNC machining centers and manual mills running miniature end mill work in steel, stainless steel, cast iron, aluminum, non-ferrous metals, composites, and wood.

Installation Notes

Installation should be performed by a qualified machinist familiar with miniature tooling and CNC or manual mill setup. Ensure the machine spindle is fully stopped and the tool path is cleared before mounting or changing the tool. Secure the shank fully within the collet bore to the recommended gauge-line depth to minimize runout and prevent tool pullout under load. Do not exceed the rated reach length with unsupported overhang beyond what the toolholder geometry allows.