Hertel GG039044 Square End Mill 11/16 in 4 Flute Hss

Product Description

The HERTEL GG039044 is a 4-flute square end mill manufactured from M7 high speed steel. It features an 11/16 inch (0.6875 inch) cutting diameter, a 1-5/8 inch length of cut, and a 5/8 inch shank diameter, with an overall length of 3-3/4 inches. The 30-degree spiral flute geometry promotes efficient chip evacuation and stable cutting across a range of milling operations. Designed for right-hand cut and right-hand flute orientation, this end mill is centercutting, allowing plunge entry into the workpiece. It is uncoated and suited for general-purpose milling in job shop and production environments.

This end mill is used in vertical and horizontal milling machines and machining centers for profiling, slotting, and peripheral milling operations. The regular-length configuration and 4-flute design make it a practical choice for ferrous and non-ferrous materials where finish and tool life balance is required. Machinists and toolroom technicians working in manufacturing, maintenance, and fabrication shops will find this a standard-duty workhorse for everyday milling tasks.

Key Features

• M7 high speed steel construction for durability in general-purpose milling
• 4-flute design balances chip clearance with surface finish quality
• 30-degree helix angle supports smooth cutting action and chip flow
• Centercutting geometry allows direct plunge entry without pre-drilling
• Right-hand cut and right-hand flute orientation for standard milling setups
• Uncoated finish suitable for use with cutting fluids on a wide range of materials

Compatibility

Designed as a standard square end mill replacement for applications requiring an 11/16 inch diameter, 5/8 inch shank, regular-length 4-flute HSS end mill in conventional milling machines and CNC machining centers.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Ensure the machine spindle is fully stopped and locked out before changing tooling. Secure the shank in a properly sized collet, end mill holder, or Weldon-style holder torqued to the machine manufacturer's specification. Confirm runout with a dial indicator before beginning a cut, and apply appropriate cutting fluid for the workpiece material.