Hertel E103101801 Square End Mill 9/32 in 4 Flute Hss

Product Description

The HERTEL E103101801 is a 4-flute, single-end square end mill manufactured from M7 high speed steel. It is designed for milling slots, shoulders, and peripheral cuts in a wide range of ferrous and non-ferrous materials. The tool features a 30-degree helix angle with a spiral flute geometry, right-hand cut, and right-hand flute orientation. Cutting diameter is 0.2813 inches (9/32 inch) with a 3/8 inch shank diameter and a 2-1/2 inch overall length. This end mill is uncoated and non-centercutting, making it suited for side milling and slotting operations where plunge entry is not required.

This end mill is used in manual knee mills, CNC machining centers, and toolroom mills handling general-purpose material removal. The 5/8 inch length of cut accommodates typical slotting and profiling depths in light-to-medium stock. It is installed and used by machinists and tool-and-die professionals in job shop, maintenance, and production environments. The 3/8 inch shank fits standard ER collet chucks, end mill holders, and Weldon-style side-lock holders commonly found in machine shops.

Key Features

• M7 high speed steel construction provides toughness and wear resistance for general-purpose machining
• 30-degree helix angle promotes smooth chip evacuation during side milling and slotting
• 4-flute design balances material removal rate with chip clearance
• Uncoated finish allows for easy resharpening and broad material compatibility
• Right-hand cut and right-hand flute for use in conventional milling setups
• Non-centercutting geometry — intended for side milling and slotting, not direct plunge entry

Compatibility

Designed as a standard-shank replacement end mill compatible with 3/8 inch ER collet chucks, end mill holders, and Weldon-style tool holders used in manual and CNC milling machines.

Installation Notes

Installation is performed by qualified machinists following standard toolholding procedures. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the shank fully in the holder to the recommended engagement depth and secure set screws or collet nuts to the tool holder manufacturer's specifications. Verify runout with a dial indicator before beginning cuts, and confirm the non-centercutting geometry is accounted for in the programmed toolpath.