Hertel E2042048 Square End Mill 3/4 in 6 Flute Cobalt

Product Description

The HERTEL E2042048 is a 6-flute cobalt square end mill designed for milling operations in ferrous and high-temperature alloy materials. Built from M42 cobalt high-speed steel, it delivers improved heat resistance and edge retention compared to standard HSS tooling. The 0.750-inch cutting diameter pairs with a 1.625-inch length of cut, making it well-suited for slotting, peripheral milling, and finishing passes where tool life under elevated cutting temperatures matters. The 30-degree helix angle promotes smooth chip evacuation and stable cutting action. This end mill ships uncoated and is centercutting, allowing plunge entry as well as lateral cuts. Licensed machinists and CNC operators in job shops and production environments are the primary users.

This end mill is used in vertical and horizontal machining centers, knee mills, and manual milling machines where a 3/4-inch shank is required. It performs well on carbon steel, alloy steel, stainless steel, and cast iron at appropriate surface footage for cobalt HSS tooling. The regular-length geometry and 3.875-inch overall length make it a standard drop-in choice for general-purpose work without extended-reach clearance requirements. Right-hand cut and right-hand spiral fluting are standard for conventional CNC and manual mill setups.

Key Features

• M42 cobalt high-speed steel construction for improved heat resistance and tool life
• 6-flute design increases feed rate capability and improves surface finish on finishing passes
• 30-degree helix angle promotes efficient chip evacuation and reduces chatter
• Centercutting geometry allows direct plunge entry without a pilot hole
• Uncoated finish for use with cutting fluids on a wide range of ferrous materials
• Right-hand cut and right-hand flute for standard mill spindle compatibility

Compatibility

Designed as an OEM-style replacement or direct-use tooling for milling machines and machining centers accepting a 3/4-inch straight shank end mill holder or collet.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. The shank must be secured in a properly sized end mill holder, collet chuck, or Weldon-style holder torqued to the toolholder manufacturer's specification. Verify spindle direction is set to right-hand rotation before engaging the cut. Always ensure the machine is in a safe, locked-out state when changing tooling.