Hertel 750438 Square End Mill 5/16 in 4 Flute Solid Carbide

Product Description

The HERTEL 750438 is a solid carbide square end mill designed for precision milling in metal-cutting applications. Built from micrograin carbide and finished with a titanium carbonitride (TiCN) coating, this tool delivers extended wear resistance and thermal hardness at the cutting edge. The 4-flute, right-hand spiral design with a 30-degree helix angle promotes efficient chip evacuation and a smooth cut finish. At 5/16 inch in diameter with a 1-1/8 inch length of cut and 3 inch overall length, this is a long-reach configuration suited to slotting, profiling, and contouring in tighter setups. Centercutting geometry allows plunge entry directly into the workpiece.

This end mill is appropriate for machining ferrous and non-ferrous metals, alloys, and hardened materials where tool life and surface finish matter. The long length of cut relative to diameter makes it well suited for deeper pockets and stepped features where a standard-length end mill would not reach. It is a single-end tool, meaning it is reground from the cutting end only. Typical users include CNC machinists, tool-and-die shops, and maintenance machining operations running vertical or horizontal milling centers.

Key Features

• Solid micrograin carbide construction for rigidity and wear resistance
• TiCN coating increases surface hardness and reduces built-up edge
• 4-flute, 30-degree right-hand spiral flute for efficient chip removal
• Centercutting design permits direct plunge milling
• Long length-of-cut configuration reaches deeper pockets and stepped walls
• Mill diameter tolerance of +0.000 / -0.002 inches for consistent fit in collets and tool holders

Compatibility

Designed as an OEM-style replacement or direct-application solid carbide square end mill for use in standard 5/16 inch collets, shrink-fit holders, or hydraulic chucks on CNC milling centers and manual knee mills.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer guidelines for tool holding and runout. Ensure the spindle and tool holder are clean and free of chips before seating the shank. Confirm proper tool projection and runout with a dial indicator before initiating a cut. Follow all applicable shop safety procedures when handling carbide tooling, as edges are sharp and the material is brittle under impact.