Hertel 750738 Square End Mill 7/16 in 4 Flute Carbide Altin

Product Description

The HERTEL 750738 is a single-end, four-flute square end mill designed for high-performance milling in ferrous and non-ferrous materials. Constructed from micrograin solid carbide and finished with an AlTiN (Aluminum Titanium Nitride) coating, this tool handles elevated cutting temperatures and abrasive workpieces where high-speed steel tooling falls short. The 7/16 inch cutting diameter pairs with a 30-degree right-hand helix and right-hand cutting direction, promoting efficient chip evacuation and smooth surface finishes. It is center-cutting, allowing direct plunge entry into the workpiece. Machinists and tool-and-die professionals in production and job-shop environments rely on this geometry for reliable results in demanding applications.

This end mill suits CNC machining centers and manual knee mills running ferrous alloys, hardened steels, stainless, and high-temp alloys where AlTiN coating provides thermal protection. The 7/8 inch length of cut accommodates standard slot and peripheral milling depths in this diameter range. The shank diameter matches the cutting diameter at 7/16 inch, making it compatible with standard ER and end mill holders designed for that bore size. No extended reach is built in, keeping the tool rigid and minimizing deflection at the cutting edge.

Key Features

• Micrograin solid carbide construction for high rigidity and wear resistance
• AlTiN coating extends tool life in high-temperature and abrasive cutting conditions
• 4 right-hand spiral flutes with 30-degree helix angle for efficient chip evacuation
• Center-cutting design allows direct plunge milling
• Right-hand cutting direction compatible with standard CNC and manual spindle rotation
• No chipbreaker or variable helix — optimized for consistent, smooth peripheral cuts

Compatibility

Designed for use in standard end mill holders and collet chucks accepting a 7/16 inch shank diameter, including ER16, ER20, and similarly sized collet systems common to CNC machining centers and manual knee mills.

Installation Notes

Installation should be performed by a qualified machinist following shop safety protocols. Ensure the spindle is fully stopped and the machine is powered down before inserting or removing the end mill from the holder. Use the appropriate wrench and collet nut torque procedure for the holder type in use — consult the toolholder manufacturer's documentation for specified values. Confirm tool runout with a dial indicator after seating to minimize premature edge wear.