Hertel E499921146 Square End Mill 3/16 in 2 Flute Hss Tin

Product Description

The HERTEL E499921146 is a single-end square end mill designed for milling flat surfaces, slots, and shoulders in ferrous and non-ferrous materials. It measures 3/16 inch in cutting diameter with a 7/16 inch length of cut and an overall length of 2-3/8 inches. Constructed from M42 high speed steel and finished with a titanium nitride (TiN) coating, it delivers solid wear resistance and heat tolerance in general-purpose and production machining environments. The 30-degree spiral flute geometry promotes efficient chip evacuation. This tool is installed by machinists and toolroom technicians in manual mills, CNC machining centers, and drill press setups requiring end milling capability.

This end mill fits common milling applications in job shops, maintenance machining, and light production work. The 3/8 inch shank diameter seats in standard end mill holders, collets, and milling chucks. Its centercutting design allows direct plunge entry into material without a pre-drilled hole. Right-hand cut and right-hand flute configuration matches standard spindle rotation on most milling machines. Typical applications include slot milling, step milling, and face milling in steel, cast iron, and aluminum workpieces.

Key Features

• M42 high speed steel construction for toughness and heat resistance in interrupted cuts
• Titanium nitride (TiN) coating reduces friction and extends tool life
• 30-degree helix angle spiral flute promotes efficient chip flow
• Centercutting geometry allows direct plunge milling without pilot hole
• Right-hand cut and right-hand flute for standard spindle operation
• Single-end design with 3/8 inch shank for broad holder compatibility

Compatibility

Designed as a general-purpose replacement or production end mill for 3/8 inch end mill holders, ER collet chucks, and side-lock holders used in manual and CNC milling machines.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Power down the spindle and confirm the machine is in a locked-out state before changing tooling. Seat the shank fully into the holder to the recommended engagement depth and torque the set screw or collet nut per the holder manufacturer specification. Inspect the cutting edges for chips or coating damage before use and confirm runout with a dial indicator when tight tolerances are required.