Harvey Tool 769262-C3 Ball End Mill 4 Flute Solid Carbide Altin

Product Description

The HARVEY TOOL 769262-C3 is a 4-flute, solid carbide ball end mill designed for high-performance milling in steel, stainless steel, and cast iron. The 1/16-inch (0.0620-inch) mill diameter features a 0.0310-inch nose radius and a 30-degree right-hand helical flute geometry suited for both roughing and finishing passes. An AlTiN PVD coating improves heat resistance and tool life in ferrous materials. The stub flute configuration, paired with an extended long-reach shank, allows access to deep or confined features while maintaining rigidity typical of shorter cutting lengths. Licensed machinists and CNC programmers working in precision component manufacturing are the primary installers and operators of this tool.

This end mill fits into residential and commercial CNC machining environments where small-diameter, long-reach tooling is required. The 5/8-inch reach length (0.6250 inches) and 0.5320-inch neck length allow the tool to reach into pockets or stepped features that standard-length end mills cannot access. Primary workpiece materials include steel (P-grade), stainless steel (M-grade), and cast iron (K-grade). The straight-cylindrical, 1/8-inch shank seats directly into standard 1/8-inch collets or end mill holders. This tool is a single-end design with right-hand cutting direction and no chipbreaker or coolant-through capability.

Key Features

• Solid carbide construction provides stiffness and wear resistance in ferrous material applications
• AlTiN PVD coating extends tool life by improving oxidation resistance at elevated cutting temperatures
• 30-degree right-hand helix promotes efficient chip evacuation during both roughing and finishing cuts
• Long-reach, stub-flute geometry enables access to deep pockets and confined features with a 5/8-inch reach length
• 4-flute configuration supports higher feed rates compared to 2-flute designs in ferrous workpiece materials
• Mill diameter tolerance of plus 0.0005 / minus 0.0005 inches ensures consistent dimensional accuracy

Compatibility

Designed for use with standard 1/8-inch straight-cylindrical collets and end mill holders on CNC machining centers and manual mills. Rated for primary workpiece materials: steel (P), stainless steel (M), and cast iron (K). Part of the Harvey Tool Miniature End Mills - Ball - Long Reach, Stub Flute series.

Installation Notes

This tool is installed by a machinist or CNC technician into a 1/8-inch collet or toolholder; ensure the holder is clean and free of chips before seating. Power down the machine spindle completely before changing tooling. Verify runout with a dial indicator after installation, as small-diameter end mills are sensitive to holder concentricity. Coolant-through is not supported; apply flood or mist coolant externally as needed per shop practice.