Accupro 2500333 Square End Mill 3/8 in 3 Flute Carbide Zrn

Product Description

The ACCUPRO 2500333 is a solid carbide square end mill designed for precision milling operations in metalworking and machining environments. Built to a 3/8 inch diameter with a 1/2 inch length of cut and 2-1/2 inch overall length, this stub-length tool delivers rigidity in tight setups where deflection control is critical. The ZrN (zirconium nitride) coating improves surface hardness and heat resistance, extending tool life in ferrous and non-ferrous applications. The variable helix geometry reduces harmonic vibration during cutting, producing a cleaner finish and reducing chatter on harder materials. Installed by machinists and CNC operators in production and job-shop settings.

This end mill suits milling, slotting, and profiling operations on a range of workpiece materials where a stub-length tool is preferred for added rigidity. The 3-flute configuration balances chip evacuation and surface finish, making it effective in both steel and aluminum applications. The right-hand cutting and right-hand spiral flute direction are standard for conventional CNC vertical machining centers and manual knee mills. The micrograin carbide substrate supports higher cutting speeds and feeds compared to standard carbide grades.

Key Features

• 3/8 inch diameter solid micrograin carbide construction for strength and wear resistance
• ZrN coating provides increased surface hardness and thermal protection at the cutting edge
• Variable helix design reduces chatter and harmonic vibration during cutting
• 3-flute geometry balances chip load and finish quality in ferrous and non-ferrous materials
• Center-cutting capable, allowing plunge entry into workpieces
• Stub length type increases rigidity and minimizes deflection in shorter reach applications

Compatibility

Designed as a direct-fit replacement or standard tooling selection for CNC machining centers and manual mills accepting a 3/8 inch straight shank end mill with right-hand cutting direction.

Installation Notes

Installation is performed by a qualified machinist or CNC setup technician. Ensure the machine spindle and tool holder are clean and free of debris before seating the shank. Confirm proper runout after clamping using a dial indicator before initiating a cut. Always verify spindle speed and feed rate parameters match the tool manufacturer recommendations for the workpiece material before starting the machine.