Hertel EF99921284 Square End Mill 7/16 Inch 2 Flute Hss

Product Description

The HERTEL EF99921284 is a square end mill designed for general-purpose milling operations in ferrous and non-ferrous materials. It features a 7/16 inch cutting diameter, a 13/16 inch length of cut, and a 3/8 inch shank diameter, with a 2-11/16 inch overall length. The tool is manufactured from high speed steel and carries a TiCN coating that increases surface hardness and reduces friction at the cutting edge. With 2 spiral flutes ground to a 30-degree helix angle and a right-hand cut with right-hand flute orientation, this end mill is suited for slotting, profiling, and peripheral milling. It is centercutting, allowing direct plunge entry into the workpiece without a pre-drilled hole.

This end mill is appropriate for use in manual mills, knee mills, and CNC machining centers running conventional milling operations. The 3/8 inch shank fits standard ER, R8, and side-lock collet systems commonly found in job shops and maintenance machining environments. The TiCN finish extends tool life in harder workpiece materials compared to uncoated HSS tooling. Machinists and tool and die technicians working on light-to-medium duty cuts in steel, stainless, cast iron, and aluminum will find this tool suitable for their applications.

Key Features

• 7/16 inch cutting diameter with 13/16 inch length of cut for precise material removal
• TiCN coating for increased wear resistance and reduced built-up edge
• 2 spiral flutes at 30-degree helix angle for efficient chip evacuation
• Centercutting design allows direct plunge milling without pre-drilling
• Right-hand cut and right-hand flute orientation for standard spindle operation
• High speed steel construction provides toughness in interrupted-cut applications

Compatibility

Designed as an OEM-style replacement or standard-stock square end mill for use in 3/8 inch collet or chuck systems on manual and CNC milling machines.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and the power is locked out before changing tooling. Seat the shank fully into the collet or chuck and tighten to the toolholder manufacturer's specified retention method. Verify runout with a dial indicator before beginning a cut to avoid premature tool wear or workpiece damage.