Promax 111-02424 Square End Mill 3/8 in 4 Flute Carbide Altin

Product Description

The PROMAX 111-02424 is a solid carbide square end mill designed for precision milling in demanding metalworking and machining applications. Built from micrograin solid carbide and finished with an AlTiN (aluminum titanium nitride) coating, this tool delivers excellent wear resistance and heat performance at elevated cutting speeds. The 4-flute spiral configuration with a 40-degree helix angle promotes efficient chip evacuation and a smooth surface finish. At 3/8 inch in diameter with a 5/8 inch length of cut and 2 inch overall length, it is sized for work in tight pockets and accurate contour passes. Installation and setup are handled by machinists and CNC programmers in job shop and production environments.

This end mill is suited for milling ferrous and non-ferrous metals, including hardened steels and stainless, where AlTiN coating provides thermal protection. The centercutting geometry allows plunge milling in addition to peripheral and slot milling. The right-hand cut and right-hand flute orientation follow standard CNC machining center conventions. It belongs to the PROMAX Series 111 product family, targeted at high-performance general-purpose milling with tight tolerances.

Key Features

• Solid micrograin carbide substrate for rigidity and edge retention
• AlTiN finish for elevated-temperature and abrasion resistance
• 40-degree helix angle with 4-flute spiral geometry for efficient chip flow
• Centercutting design allows direct plunge entry
• Right-hand cut and right-hand flute for standard CNC spindle compatibility
• Mill diameter tolerance of +0.000 / -0.002 inches for precise fit in close-tolerance work

Compatibility

Designed as a standard 3/8 inch shank square end mill compatible with CNC machining centers, knee mills, and manual mills equipped with ER collet chucks or end mill holders accepting a 3/8 inch round shank.

Installation Notes

Installation is performed by a machinist or CNC setup technician. The machine spindle must be fully stopped and locked before inserting or removing the tool from the holder. Ensure the collet or end mill holder bore is clean and free of chips before seating the shank. Verify runout with a dial indicator after clamping to confirm tool concentricity before beginning a cut.