Hertel E2030904 Square End Mill 3/4 in 2 Flute Cobalt

Product Description

The HERTEL E2030904 is a cobalt square end mill designed for metal removal in milling applications where toughness and heat resistance are required. Built from M42 cobalt high-speed steel, this single-end tool features a 3/4 inch cutting diameter, a 1-5/16 inch length of cut, and a 2-flute spiral geometry with a 30-degree helix angle. The bright, uncoated finish is suitable for a wide range of ferrous and non-ferrous materials. This end mill is installed by machinists and tool-and-die professionals working on manual mills, CNC machining centers, and knee mills where a center-cutting, right-hand spiral tool is required.

This end mill is suited for slotting, peripheral milling, and plunge-cutting operations in job shops, maintenance machining, and production environments. The 2-flute configuration provides strong chip evacuation in softer steels, aluminum alloys, and similar materials. With a 1/2 inch shank diameter and 3-5/16 inch overall length, it fits standard ER and straight-bore tool holders commonly found in both manual and CNC setups. The regular length classification keeps the tool rigid for general-purpose cuts.

Key Features

• M42 cobalt high-speed steel construction for heat and wear resistance
• 3/4 inch cutting diameter with 1-5/16 inch length of cut
• 2-flute spiral geometry with 30-degree right-hand helix for efficient chip evacuation
• Center-cutting design allows direct plunge entry into workpiece material
• Bright, uncoated finish for broad material compatibility
• 1/2 inch shank diameter fits standard collet and end mill holders

Compatibility

Designed as a general-purpose replacement or production end mill for use in any standard end mill holder, collet chuck, or milling fixture accepting a 1/2 inch straight shank.

Installation Notes

Installation and tool changes should be performed with the machine spindle fully stopped and locked out per applicable safety procedures. Seat the shank fully into the tool holder and torque the retention hardware to the tool holder manufacturer specification. Verify runout with a dial indicator before taking a cut. Inspect the cutting edges and shank for damage before each use.