Hertel E2050011 Square End Mill 11/64 in 2 Flute Cobalt

Product Description

The HERTEL E2050011 is a double-end cobalt square end mill designed for precision metal removal in milling operations. Machined from M42 cobalt high-speed steel, this tool delivers improved hardness and heat resistance compared to standard HSS, making it well-suited for cutting harder ferrous and exotic alloy materials. The 11/64-inch (0.1719-inch) cutting diameter and 7/16-inch length of cut (LOC) make it a compact, accurate tool for slotting, profiling, and peripheral milling. The double-end design extends tool life by providing two usable cutting ends. A 30-degree helix angle promotes efficient chip evacuation and smooth cutting action across a range of materials.

This end mill is used in manual knee mills, CNC machining centers, and drill press setups where a small-diameter, short-LOC tool is required. The bright uncoated finish makes it a general-purpose option for shops cutting steel, stainless, cast iron, and similar materials. The double-end configuration is common in production environments where tool changeover time matters. With a 3/8-inch shank diameter, it seats in standard collet chucks and end mill holders. Machinists, tool-and-die makers, and CNC operators in job shops and production facilities are the primary users.

Key Features

• M42 cobalt HSS construction for improved heat and wear resistance over standard M2 HSS
• Double-end design provides two cutting ends to extend service life
• 30-degree right-hand helix for efficient chip evacuation and smooth cutting
• Center-cutting geometry allows plunge entry cuts
• Bright/uncoated finish for general-purpose milling of ferrous and exotic alloys
• Right-hand cutting direction compatible with standard spindle rotation

Compatibility

Designed as a general-purpose replacement or production end mill for applications requiring an 11/64-inch diameter, 2-flute, double-end cobalt square end mill with a 3/8-inch shank in standard collet chucks and end mill holders.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the shank fully and evenly in a collet or end mill holder to the recommended grip length before tightening. Verify runout with a dial indicator before beginning a cut, and confirm feed and speed parameters are appropriate for the workpiece material and machine.