Harvey Tool 44020-C3 Corner Rounding End Mill 3/8 Inch

Product Description

The HARVEY TOOL 44020-C3 is a double-end corner rounding end mill designed for precision edge-breaking and radius contouring on metal workpieces. Built from solid carbide and coated with AlTiN (Aluminum Titanium Nitride), this tool delivers hardness and heat resistance well suited to dry or high-speed machining environments. It produces a 0.50 mm (0.0197 inch) radius on workpiece edges, with a 3/8-inch mill diameter and a 1/4-inch tip diameter. Four flutes provide a balance of chip evacuation and surface finish quality. The double-end configuration extends tool life by offering two usable cutting ends on a single shank.

This end mill is used in CNC milling operations across aerospace, die-and-mold, medical device, and general precision machining shops. It is appropriate for contouring and edge-radiusing on ferrous and hardened materials where an AlTiN coating provides performance advantages over uncoated or TiN-coated alternatives. Machinists and CNC programmers working with tight radius tolerances and demanding materials will find the solid carbide construction essential for dimensional consistency.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard-material applications
• AlTiN coating enhances heat resistance and extends tool life in dry or semi-dry cutting
• Double-end design provides two cutting ends, improving cost-per-edge value
• 0.50 mm radius produces consistent, repeatable edge breaks and contours
• 4-flute geometry balances chip evacuation with superior surface finish
• 1/4-inch tip diameter accommodates tighter corner geometry without interference

Compatibility

Designed as an OEM-style precision cutting tool for use in standard 3/8-inch collet or end mill holders on CNC milling machines and machining centers capable of accepting solid carbide tooling.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the 3/8-inch shank fully and evenly in a clean, undamaged collet or tool holder and torque the retention mechanism to the holder specification. Inspect the cutting edges before use and do not attempt to regrind a double-end tool without appropriate carbide grinding equipment.