Hertel E4030028 Square End Mill 7/16 in 2 Flute Cobalt

Product Description

The HERTEL E4030028 is a 2-flute cobalt square end mill designed for milling ferrous and hard materials in demanding shop environments. Built from M42 cobalt high-speed steel with a titanium nitride (TiN) finish, this tool delivers heat and wear resistance suited to tough alloy steels, stainless, and hardened workpieces. The 7/16-inch cutting diameter pairs with a 3/8-inch shank, a 13/16-inch length of cut, and a 2.5-inch overall length. A 30-degree helix spiral flute geometry promotes chip evacuation and smooth cutting action. This is a centercutting end mill, enabling direct plunge entry into the workpiece. Installation is performed by machinists and tooling technicians on manual mills and CNC machining centers.

This end mill is suited for slotting, profiling, and peripheral milling operations in job shops, toolrooms, and production machining environments. The regular-length geometry fits standard toolholders with a 3/8-inch bore. Right-hand cut and right-hand flute configuration are consistent with conventional spindle rotation on most vertical and horizontal milling machines. The TiN coating extends tool life compared to uncoated cobalt tooling, making this a practical choice when cutting alloy steel, tool steel, and similar materials where HSS performance falls short.

Key Features

• Cobalt M42 construction for improved red hardness and wear resistance over standard M2 HSS
• TiN finish reduces friction and extends tool life in ferrous materials
• Centercutting design allows plunge milling without a pre-drilled entry hole
• 30-degree helix spiral flute promotes chip flow and reduces cutting forces
• Right-hand cut and right-hand flute for standard spindle applications
• 2-flute configuration provides chip clearance in tougher, stickier materials

Compatibility

Designed as an OEM-style replacement or standard tooling fit for milling machines and machining centers using 3/8-inch shank toolholders, collets, or end mill adapters.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Ensure the machine spindle is fully stopped and locked before inserting or removing the tool from the holder. Secure the shank to the full recommended engagement depth in the collet or holder to prevent pullout under load. Follow applicable shop safety procedures and machine tool manufacturer guidelines when setting feeds, speeds, and depth of cut for the specific workpiece material.