Hertel GG99914174 Square End Mill 1/8 in 2 Flute Hss

Product Description

The HERTEL GG99914174 is a double-end, square-profile end mill designed for general-purpose milling operations in a wide range of metalworking applications. Manufactured from M7 high speed steel in an uncoated finish, it features a 0.125-inch cutting diameter and a 30-degree helix angle with spiral flutes that promote efficient chip evacuation. With two flutes and a centercutting design, this tool handles both slotting and plunge-cutting operations. The 0.375-inch shank diameter provides solid rigidity in standard end mill holders and collet chucks. Machinists and tool-and-die professionals working on manual mills or CNC machining centers are the typical installers of this tool.

This end mill is suited for light-duty to medium-duty material removal on ferrous and non-ferrous workpieces in production and job-shop environments. The double-end configuration doubles usable tool life before replacement. Right-hand cut and right-hand flute geometry match standard spindle rotation on conventional milling machines. The 0.1875-inch length of cut is appropriate for shallow-depth slot milling, profiling, and edge work on small-scale components where precision and control are priorities.

Key Features

• Double-end design extends usable tool life by providing two cutting ends per tool
• M7 high speed steel construction offers good toughness and wear resistance for general metalworking
• Centercutting geometry allows direct plunge entry into the workpiece without a pre-drilled hole
• 30-degree helix angle with spiral flutes promotes smooth cutting action and chip clearance
• Uncoated finish suits applications where coating is unnecessary or where re-sharpening is anticipated
• Right-hand cut and right-hand flute configuration for use with standard spindle rotation

Compatibility

Designed as an OEM-style replacement or standard tooling option for 3/8-inch end mill holders, collet chucks, and milling machines accepting a 0.375-inch shank diameter.

Installation Notes

This tool is installed by machinists and CNC operators in milling machine spindles using an appropriately sized collet or end mill holder. Ensure the machine spindle is fully de-energized and locked out before changing tooling. Verify shank seating depth and holder runout before commencing cuts. Follow shop-standard speeds and feeds for M7 high speed steel based on workpiece material.