Hertel GG99914216 Square End Mill 0.625 in 2 Flute Hss

Product Description

The HERTEL GG99914216 is a 2-flute square end mill designed for general-purpose milling operations in machine shops and manufacturing environments. Built from M7 high speed steel, this uncoated end mill features a 30-degree spiral flute with a right-hand cut and right-hand flute direction. The stub-length geometry — with a 0.625-inch cutting diameter and a 0.625-inch length of cut — provides rigidity during slotting, profiling, and peripheral milling. The centercutting design allows plunge cuts in addition to standard side and end milling. Machinists and CNC operators working with ferrous and non-ferrous materials in production or maintenance settings are the primary users of this tool.

This end mill is suited for light-to-medium duty material removal in manual mills and CNC machining centers. The 0.5-inch shank diameter fits standard R8, ER, and similar collet systems commonly found in Bridgeport-style mills and CNC VMCs. The stub-length configuration minimizes deflection and chatter in applications where extended reach is not required, making it a practical choice for short-depth slot milling, step milling, and face contouring on steel, cast iron, aluminum, and similar workpiece materials.

Key Features

• M7 high speed steel construction for wear resistance in ferrous and non-ferrous cutting
• 2-flute design promotes chip evacuation in slot milling and plunge operations
• 30-degree helix angle balances cutting efficiency and edge strength
• Centercutting geometry permits plunge entry without pre-drilling
• Stub-length configuration reduces deflection in short-depth applications
• Uncoated finish suitable for use with cutting fluids on a wide range of materials

Compatibility

Designed as a standard 0.5-inch shank square end mill compatible with R8, ER, and similar collet toolholding systems used in manual knee mills and CNC vertical machining centers.

Installation Notes

Installation should be performed by a qualified machinist following the toolholder manufacturer's torque and runout specifications. Ensure the machine spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Verify shank engagement depth meets the toolholder minimum before tightening. Inspect the cutting edges for chips or damage before each use, and apply appropriate cutting fluid for the workpiece material to extend tool life.