Hertel E1034016 Square End Mill 1/4 in 4 Flute Hss Long

Product Description

The HERTEL E1034016 is a 4-flute, single-end square end mill ground from M7 high speed steel. It carries a 0.25 inch cutting diameter, a 1.25 inch length of cut, and a 0.375 inch straight shank, with an overall length of 3.0625 inches. The 30-degree spiral flute geometry promotes efficient chip evacuation during milling operations. Designated as a long-length tool, it provides additional reach for deeper pockets and slots compared to standard-length equivalents. This end mill is uncoated and suited for general-purpose milling in ferrous and non-ferrous materials. It is installed and operated by machinists and tool-and-die professionals working with manual or CNC milling machines.

This end mill is designed for slotting, profiling, and peripheral milling applications in job shop, production, and maintenance machining environments. The long-length classification makes it appropriate for deep-pocket work where a standard-length tool lacks sufficient reach. Right-hand cut and right-hand flute geometry suit the vast majority of conventional vertical and horizontal milling setups. Because this tool is not center-cutting, it is not suited for direct plunge entry and requires a pre-drilled hole or ramping entry path when beginning a slot.

Key Features

• M7 high speed steel construction for toughness across a broad range of workpiece materials
• 4-flute configuration balances chip capacity with surface finish quality
• 30-degree helix angle on spiral flutes for smooth cutting action and chip evacuation
• Long-length designation provides 1.25 inches of length of cut for deeper pocket access
• Uncoated finish allows straightforward regrinding and reconditioning
• Right-hand cut and right-hand flute orientation for standard milling machine compatibility

Compatibility

Designed as an OEM-style replacement or direct substitute for 0.25 inch diameter, 4-flute, long-length square end mills with a 0.375 inch shank used in standard milling machine collets and tool holders.

Installation Notes

Installation is performed by a qualified machinist using an appropriate collet, end mill holder, or Weldon-style side-lock holder sized for a 0.375 inch shank. Ensure the machine spindle is fully stopped and the tool holder is clean and free of chips before seating the tool. Secure the shank to the full recommended engagement depth of the holder to prevent pullout under cutting loads. Because this tool is not center-cutting, do not program a direct axial plunge into solid material.