Hertel E1031904 Square End Mill 5/8 in 4 Flute Hss

Product Description

The HERTEL E1031904 is a 4-flute square end mill designed for general-purpose milling operations in a wide range of metals and engineering materials. Manufactured from M7 high speed steel in an uncoated finish, this tool features a 5/8 inch cutting diameter, a 1-3/8 inch length of cut, and a 1/2 inch straight shank. The 30-degree spiral helix promotes smooth chip evacuation and reduces cutting forces across the full length of cut. Right-hand cut and right-hand flute orientation are standard for conventional mill spindle setups. This end mill is appropriate for machinists, tool-and-die shops, and maintenance professionals running manual or CNC knee mills and vertical machining centers.

This end mill is suited for slotting, peripheral milling, and profiling in ferrous and non-ferrous stock at moderate cutting speeds. The regular-length geometry fits standard tool holders and collet chucks without extended reach adapters. The 1/2 inch shank accommodates common ER and R8 collet systems found on bridgeport-style and similar vertical mills. It is not center-cutting, so ramping or helical entry paths are required when plunging is needed.

Key Features

• 5/8 inch cutting diameter with 1-3/8 inch length of cut for medium-depth slot and profile work
• M7 high speed steel construction provides good toughness and wear resistance at conventional cutting speeds
• 4-flute configuration improves surface finish compared to 2-flute designs in ferrous materials
• 30-degree helix angle promotes efficient chip flow and reduces chatter
• Right-hand cut and right-hand flute for standard spindle direction
• Uncoated finish suitable for use with cutting fluid in steel and cast iron applications

Compatibility

Designed as a direct-fit replacement or standard-stock end mill for 1/2 inch collet and tool holder systems on vertical knee mills, CNC machining centers, and similar equipment requiring a regular-length 4-flute square end mill.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Power down and lock out the spindle before changing tooling. Seat the shank fully into the collet or end mill holder and torque the retention nut to the tool holder manufacturer specification. Confirm runout with a dial indicator before cutting, and apply appropriate cutting fluid for the workpiece material.