Hertel E116300801 Keyway End Mill 0.125 in 2 Flute Hss

Product Description

The HERTEL E116300801 is a 2-flute keyway end mill designed for milling keyways, slots, and pockets in metalworking applications. Manufactured from high speed steel (HSS), this end mill features a spiral flute geometry with a 30-degree helix angle and an uncoated finish. The mill diameter measures 0.125 inches with a 0.375-inch length of cut and a 3/8-inch shank diameter. The overall length (OAL) is 2-5/16 inches. The centercutting design allows plunge milling directly into the workpiece, making it suitable for both slot milling and keyway operations on manual mills and CNC machining centers.

This end mill is suited for use in general-purpose metalworking shops, tool rooms, and maintenance environments where small-diameter slot and keyway cutting is required. The HSS construction handles a broad range of ferrous and non-ferrous materials at conventional cutting speeds. The 0.125-inch diameter makes it appropriate for fine keyway work on small shafts and precision components. Machinists, toolmakers, and maintenance technicians are the typical users of this size range.

Key Features

• 0.125-inch mill diameter for precise small-slot and keyway cutting
• 2-flute spiral design improves chip evacuation during slotting operations
• 30-degree helix angle balances cutting efficiency and edge strength
• Centercutting geometry permits direct plunge entry without pre-drilling
• Uncoated high speed steel construction suitable for general metalworking materials
• 3/8-inch shank diameter fits standard collets and end mill holders

Compatibility

Designed as a standard keyway end mill for use in manual knee mills, CNC machining centers, and toolroom mills equipped with collets or end mill holders accepting a 3/8-inch shank diameter.

Installation Notes

Installation and operation should be performed by a qualified machinist or toolmaker. Ensure the machine spindle is fully stopped and the power is locked out before mounting or removing the end mill. Secure the shank firmly in a clean, undamaged collet or end mill holder to the tool holder specification; an improperly seated tool can cause runout and premature cutting edge failure. Use appropriate cutting speeds and feeds for the workpiece material, and verify adequate coolant or lubrication to extend tool life when cutting ferrous materials.