Hertel E4050010 Square End Mill 5/32 in 2 Flute Cobalt

Product Description

The HERTEL E4050010 is a cobalt double-end square end mill designed for milling operations in ferrous and hardened materials where high heat resistance is required. Built from M42 cobalt high-speed steel, it carries a TiN (titanium nitride) finish that extends tool life by reducing friction and wear at the cutting edge. With a 5/32-inch cutting diameter, a 7/16-inch length of cut, and a 3/8-inch shank diameter, this end mill is suited for slotting, profiling, and peripheral milling in tight-clearance setups. The double-end configuration delivers two usable cutting ends per tool, improving cost efficiency in production environments. Licensed machinists and tool-and-die professionals are the primary users.

This end mill is intended for use in vertical machining centers, knee mills, and manual milling machines where a 3/8-inch collet or end mill holder is available. The centercutting geometry allows plunge milling directly into a workpiece without a pre-drilled pilot hole. At 3-1/8 inches overall length, it fits standard toolholding setups for small-diameter work. Typical applications include die and mold work, fixture fabrication, and precision part machining in cobalt-appropriate cutting conditions on steel, stainless, and similar alloys.

Key Features

• M42 cobalt HSS construction for elevated heat and wear resistance
• TiN coating reduces friction and extends cutting edge life
• Double-end design provides two cutting ends per tool
• Centercutting geometry enables direct plunge entry
• 2-flute configuration promotes chip evacuation in slotting and profiling
• 3/8-inch shank fits standard collets and end mill holders

Compatibility

Designed as a replacement or production end mill for any milling machine or machining center accepting a 3/8-inch straight shank with standard collet or end mill holder tooling.

Installation Notes

Installation is performed by qualified machinists following standard toolholding procedures. Ensure the machine spindle is fully powered down and at rest before inserting or removing the tool from the holder. Use a properly sized collet or set-screw end mill holder torqued per the toolholder manufacturer specifications. Inspect the cutting edges and TiN coating for chips or wear before each use; do not run a damaged end mill at speed.