Hertel E116303201 Keyway End Mill 0.499 in 2 Flute Hss

Product Description

The HERTEL E116303201 is a 2-flute high speed steel keyway end mill designed for slotting, keyway cutting, and light profiling operations on ferrous and non-ferrous materials. The cutter measures 0.499 inches in diameter with a 1-inch length of cut and a 3-inch overall length. The 1/2-inch shank diameter fits standard ER collets and end mill holders. The uncoated HSS construction suits general-purpose machining environments where regrinding or cost-conscious tooling choices are priorities. A 30-degree helix angle promotes smooth chip evacuation during slotting passes, and the centercutting geometry allows plunge entry without a pre-drilled pilot hole.

This end mill is used in manual mills, knee mills, and CNC machining centers for keyway and slot applications in maintenance, repair, and production environments. It is well suited for tool rooms, machine shops, and industrial maintenance departments where standard keyway dimensions require a near-half-inch cutter. The uncoated finish makes it compatible with a wide range of cutting fluids and regrinding services.

Key Features

• 0.499-inch cutting diameter for precise keyway fits
• 1-inch length of cut for standard keyway depth requirements
• 2-flute geometry optimized for slotting and keyway operations
• Centercutting design allows direct plunge entry
• 30-degree helix angle promotes chip flow and reduces cutting forces
• Uncoated high speed steel construction supports regrinding

Compatibility

Designed as a standard keyway end mill with a 1/2-inch shank, compatible with ER collet chucks, end mill holders, and side-lock holders sized for 1/2-inch straight shanks on manual and CNC milling machines.

Installation Notes

Installation is performed by machinist or toolroom personnel. Secure the shank fully within the collet or holder to the recommended grip depth before tightening. Verify spindle runout before cutting to protect the cutting edge and maintain keyway tolerance. Always bring the machine to a full stop before tool changes and confirm workpiece clamping is rigid before beginning any slotting pass.