Hertel E299914088 Square End Mill 7/32 in 2 Flute Cobalt

Product Description

The HERTEL E299914088 is a cobalt square end mill designed for milling operations in ferrous and high-temperature alloy materials. It features a 7/32-inch (0.2188 inch) cutting diameter, a 7/8-inch length of cut, and a 3/8-inch shank diameter with an overall length of 2-3/4 inches. The two-flute, spiral design with a 30-degree helix angle promotes efficient chip evacuation and smooth cutting action. Manufactured from M42 cobalt high-speed steel, this end mill delivers heat and wear resistance well beyond standard HSS tooling. It is uncoated and suited for applications where coating is unnecessary or incompatible with the workpiece material.

This end mill is used in vertical milling machines, manual knee mills, and CNC machining centers for slotting, profiling, and plunge-cutting operations. The centercutting geometry allows direct plunge entry without a pre-drilled pilot hole, making it versatile across a range of milling tasks. Its right-hand cut and right-hand flute configuration is standard for conventional and climb milling setups. Typical users include machinist shops, tool-and-die operations, and maintenance machinists working with stainless steel, alloy steel, and similar materials.

Key Features

• M42 cobalt construction provides elevated heat resistance compared to standard M2 HSS
• Centercutting design allows direct plunge milling without a pilot hole
• 30-degree helix angle supports efficient chip evacuation in ferrous materials
• Two-flute geometry maximizes chip clearance in slotting and deep-pocket applications
• Uncoated finish suitable for applications where coated tooling is not required
• Right-hand cut, right-hand flute configuration compatible with standard milling setups

Compatibility

Designed as a standard square end mill for use in milling machines and machining centers accepting a 3/8-inch shank diameter collet or end mill holder.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Secure the shank in a properly sized collet or end mill holder and verify runout before beginning a cut. Always follow applicable machine tool manufacturer guidelines for tool holding and operating speeds.