Hertel E2031901 Square End Mill 7/16 in 4 Flute Cobalt

Product Description

The HERTEL E2031901 is a 4-flute cobalt square end mill designed for milling operations in ferrous and hard materials. Built from M42 cobalt high-speed steel, it delivers improved heat and wear resistance compared to standard M2 HSS tooling. The cutter measures 0.4375 inches (7/16 inch) in diameter with a 1 inch length of cut and a 3/8 inch shank diameter, giving it a compact profile suited for general-purpose slotting, profiling, and peripheral milling. The 30-degree helix spiral flute geometry promotes chip evacuation and smooth cutting action. This is a right-hand cut, right-hand flute configuration in an uncoated finish. Machinists and tool-and-die professionals select this end mill for production and maintenance milling applications.

This end mill fits conventional knee mills, CNC machining centers, and manual milling machines where a 3/8 inch collet or end mill holder is available. The regular-length geometry and 2-11/16 inch overall length make it well suited for general pocket milling, shoulder milling, and contour work in steel, stainless, and cast iron. The non-centercutting design means it requires a pre-drilled entry point for full-slot plunge operations. It is sold as a single unit.

Key Features

• M42 cobalt HSS construction for improved heat resistance and tool life in tough materials
• 4-flute configuration provides a good balance of chip clearance and surface finish
• 30-degree helix spiral flute promotes efficient chip evacuation
• Right-hand cut and right-hand flute geometry for standard spindle-direction milling
• Uncoated finish suitable for use with cutting fluids on ferrous materials
• Non-centercutting design; requires pre-drilled entry for plunge cuts

Compatibility

Designed for use in any milling machine or machining center accepting a 3/8 inch shank end mill holder or collet, including ER-style collet chucks and Weldon-style side-lock holders.

Installation Notes

Installation is performed by a machinist or toolroom technician. Power down and lock out the spindle before changing tooling. Seat the shank fully into the collet or holder to the minimum clamping depth recommended by the holder manufacturer before tightening. Inspect the cutting edges for chips or damage before mounting, and verify runout with a dial indicator after clamping when tight tolerances are required.