Accupro 2500462 Square End Mill 5/16 in 3 Flute Carbide Zrn

Product Description

The ACCUPRO 2500462 is a single-end square end mill designed for precision milling in metals and hard materials. Built from micrograin solid carbide and coated with ZrN (zirconium nitride), it delivers extended tool life and reduced friction in demanding cutting applications. The 3-flute geometry with a 37-degree right-hand spiral helix balances chip evacuation and surface finish across a range of ferrous and non-ferrous materials. With a 5/16 inch cutting diameter and 13/16 inch length of cut, this end mill is well suited for slotting, profiling, and finish passes in close-tolerance work. It is centercutting and features extended reach, making it capable in both conventional and plunge operations.

This end mill is used in CNC machining centers, vertical mills, and manual knee mills across job shop, production, and maintenance environments. The 5/16 inch shank diameter fits standard collets and end mill holders. At 4 inches overall length with a 2-1/8 inch reach length, it accommodates moderate depth-of-cut scenarios where standard-length tools cannot reach. Machinists, tool and die makers, and maintenance technicians working in aerospace, mold, and general metalworking applications will find this a practical choice for tight-tolerance milling work.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance
• ZrN coating reduces friction and extends tool life on steel and non-ferrous alloys
• 37-degree right-hand helix promotes chip flow and reduces cutting force
• Centercutting design allows direct plunge entry
• Extended reach at 2-1/8 inches for access in deeper pockets
• Mill diameter tolerance of +0.0000 / -0.0020 inches for consistent fit in precision work

Compatibility

Designed as an OEM-style replacement or direct-use tooling for standard 5/16 inch collet chucks and end mill holders on CNC machining centers and conventional vertical mills accepting fractional-inch shank tooling.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer guidelines for tool holding and runout verification. Confirm collet or holder bore matches the 5/16 inch shank diameter and that tool overhang is minimized to reduce deflection. Verify spindle direction is set to right-hand rotation before engaging the cut. Never exceed the rated length of cut or apply side loads beyond the tool geometry specification.