Hertel E7039040 Square End Mill 5/8 Inch 4 Flute Cobalt

Product Description

The HERTEL E7039040 is a 4-flute cobalt square end mill designed for general-purpose milling operations in ferrous and non-ferrous materials. Built from M42 cobalt high-speed steel and coated with TiCN, this tool delivers improved wear resistance and longer tool life compared to standard HSS end mills. The 5/8-inch cutting diameter and 1-5/8-inch length of cut make it well suited for slotting, profiling, and peripheral milling. A 30-degree helix angle promotes smooth chip evacuation, and the centercutting geometry allows direct plunge entry into the workpiece. This end mill is typically installed by machinists and tool-and-die professionals in manual or CNC milling setups.

This end mill is intended for use in vertical milling machines, knee mills, and CNC machining centers where a 5/8-inch collet or end mill holder is used. The right-hand cut and right-hand spiral flute configuration is standard for conventional milling applications. The regular-length geometry fits standard reach requirements, making it appropriate for production and job-shop environments handling steel, stainless steel, cast iron, and similar materials.

Key Features

• M42 cobalt HSS construction provides heat and wear resistance in demanding cutting conditions
• TiCN coating reduces friction and extends tool life on hard or abrasive materials
• 4-flute, spiral-flute design with 30-degree helix angle promotes efficient chip removal
• Centercutting geometry allows plunge milling without a pre-drilled entry hole
• Right-hand cut and right-hand flute direction for standard milling setups
• Matched shank and cutting diameter at 5/8 inch simplifies toolholder selection

Compatibility

Designed as a direct-fit replacement or standard tooling selection for any milling machine or machining center equipped with a 5/8-inch collet, end mill holder, or Weldon-style tool holder.

Installation Notes

Installation is performed by machinists using a properly sized collet or end mill holder torqued to the machine manufacturer's specification. Verify spindle and holder runout before use to avoid premature tool wear or breakage. Always confirm the machine is in a safe, de-energized state and the spindle is fully stopped before changing tooling. Follow applicable shop safety standards and machine operating procedures when setting depth of cut and feed rates.