Hertel E299914090 Square End Mill 9/32 in 2 Flute Cobalt

Product Description

The HERTEL E299914090 is a cobalt square end mill designed for milling ferrous and tough alloy materials in machining center and manual mill applications. Built from M42 cobalt high-speed steel, it delivers heat resistance and edge retention that standard HSS tooling cannot match. The 9/32 inch (0.2813 inch) cutting diameter pairs with a 1 inch length of cut and a 30-degree spiral helix for efficient chip evacuation. This is a single-end, uncoated tool suited for machinists and toolroom operators running production or prototype work on steel, stainless, and similar materials.

This end mill fits residential machine shop, production floor, and toolroom environments where a smaller-diameter cobalt tool is needed for slotting, profiling, or peripheral milling. The 3/8 inch shank diameter is compatible with standard ER collet chucks, Weldon-style holders, and side-lock adapters commonly found on vertical machining centers and knee mills. The centercutting geometry allows direct plunge entry into a workpiece without a pre-drilled hole, adding flexibility to the tool path.

Key Features

• M42 cobalt high-speed steel construction for elevated heat and wear resistance
• Centercutting design permits direct plunge milling
• 30-degree helix angle promotes smooth chip flow and reduced cutting forces
• Right-hand cut, right-hand spiral flute configuration for standard spindle operation
• 2-flute geometry maximizes chip clearance in slotting and full-width cuts
• Uncoated finish suitable for use with cutting fluids on a wide range of ferrous materials

Compatibility

Designed as an OEM-style replacement or direct-use cobalt end mill for applications requiring a 9/32 inch diameter, 3/8 inch shank, 2-flute square end mill in standard vertical or horizontal milling setups.

Installation Notes

Installation is performed by a machinist or toolroom operator using a calibrated torque wrench and the appropriate collet or end mill holder. Ensure the spindle is fully stopped and the machine is powered down before inserting or removing the tool. Confirm runout with a dial indicator after seating to verify proper holder engagement. Follow the machine tool manufacturer guidelines for feed, speed, and depth of cut when setting up the operation.