Hertel 750664 Square End Mill 5/16 in 3 Flute Carbide

Product Description

The HERTEL 750664 is a solid carbide square end mill designed for precision milling operations in metalworking and machining applications. Built from micrograin solid carbide and coated with Titanium Nitride (TiN), this single-end tool delivers extended tool life and improved wear resistance compared to uncoated carbide. It features a 5/16-inch diameter cutting edge, a 13/16-inch length of cut, and a 30-degree right-hand helix. With a 2-1/2-inch overall length and a matching 5/16-inch shank diameter, it fits standard collet toolholders on CNC mills and manual knee mills alike. Machinists, tool-and-die makers, and general machine shop personnel are the primary users.

This end mill is suited for slotting, profiling, and peripheral milling in ferrous and non-ferrous materials where a square shoulder finish is required. The three-flute geometry balances chip evacuation with rigidity, making it appropriate for both roughing passes at moderate depths and finishing cuts. It is centercutting, allowing direct plunge entry into workpieces without a pre-drilled pilot hole. Typical applications include mold work, fixture building, and production machining in job shop environments.

Key Features

• Micrograin solid carbide substrate provides hardness and rigidity for tight-tolerance work
• Titanium Nitride (TiN) coating reduces friction and extends cutting life
• Three-flute spiral design balances chip clearance and cutting stability
• 30-degree right-hand helix improves surface finish on vertical walls
• Centercutting geometry allows direct plunge milling without a pilot hole
• Single-end configuration with consistent 5/16-inch shank and cutter diameter for straightforward toolholder setup

Compatibility

Designed as an OEM-style replacement or direct-fit cutting tool for CNC machining centers and manual milling machines accepting a 5/16-inch straight shank collet or end mill holder.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the shank fully into the collet or end mill holder and torque the drawbar or collet nut per the machine manufacturer specification. Confirm runout with a dial indicator before beginning a cut, as excessive runout accelerates carbide chipping on this class of tool.