Hertel GG99914156 Square End Mill 1/2 in 2 Flute Hss

Product Description

The HERTEL GG99914156 is a square end mill designed for general-purpose milling operations in machine shops and manufacturing environments. Built from M7 high speed steel, this uncoated, single-end tool features a 0.5-inch cutting diameter, a 1.5-inch length of cut, and a 3.5-inch overall length. The spiral flute geometry runs at a 30-degree helix angle with right-hand cut and right-hand flute orientation. The centercutting design allows plunge entry directly into the workpiece. Machinists and tool-and-die professionals use this end mill on manual mills, knee mills, and CNC machining centers for slotting, profiling, and pocketing operations in steel, aluminum, and similar machinable materials.

This end mill suits residential and light industrial machine shops requiring a reliable, cost-effective HSS cutting tool. The 0.5-inch shank diameter fits standard ER collets, end mill holders, and milling chucks on both vertical and horizontal spindles. With a 2-flute configuration, it performs well in slotting applications where chip clearance is a priority. The 30-degree helix angle provides a balance of cutting efficiency and edge strength across a range of workpiece materials.

Key Features

• M7 high speed steel construction for toughness in interrupted cuts and general-purpose milling
• Centercutting geometry allows direct plunge entry without a pre-drilled hole
• 30-degree helix angle balances shear action and edge stability
• 2-flute design maximizes chip clearance in slotting and pocketing operations
• Right-hand cut and right-hand spiral flute for standard spindle rotation
• Uncoated finish suitable for use with cutting fluids on ferrous and non-ferrous materials

Compatibility

Designed as an OEM-style replacement or standard-duty end mill for use in any milling spindle accepting a 0.5-inch shank diameter via ER collet, end mill holder, or similar toolholding system.

Installation Notes

Installation requires a milling machine spindle with appropriate toolholding for a 0.5-inch shank. Power down and lock out the machine before changing tooling. Ensure the shank is fully seated and the collet or holder is torqued to the toolholder specification before starting the spindle. Inspect the cutting edges for chips or wear before each use and replace the tool if edge integrity is compromised.