Accupro 95168321 Square End Mill 5/16 in 5 Flute Carbide Altin

Product Description

The ACCUPRO 95168321 is a 5-flute solid carbide square end mill designed for high-performance milling in demanding machining environments. With a 5/16-inch cutting diameter and a 1-3/8-inch length of cut, it delivers extended reach capability in a long-series configuration. The AlTiN coating provides heat resistance and extended tool life at elevated cutting speeds. Micrograin carbide construction gives the cutting edges superior hardness and wear resistance. The variable helix geometry reduces harmonic chatter and promotes stable chip evacuation, making it well suited for profiling, slotting, and peripheral milling operations in ferrous and hardened materials.

This end mill is suited for CNC machining centers and manual mills where a right-hand, center-cutting single-end tool is required. The 5/16-inch shank diameter matches the cutting diameter for straightforward toolholder setup. The long-length format supports applications where workpiece geometry requires extended reach beyond what a standard-length end mill can provide. It is appropriate for production machining shops, toolrooms, and job shops working with steel, stainless steel, cast iron, and similarly hard materials where the AlTiN coating and micrograin substrate perform most effectively.

Key Features

• 5-flute geometry increases feed rates and improves surface finish compared to 4-flute designs
• Variable helix reduces vibration and chatter during aggressive cuts
• AlTiN coating provides oxidation resistance and extended tool life at high cutting temperatures
• Micrograin solid carbide substrate delivers hardness and edge retention
• Center-cutting design enables plunge entry into the workpiece
• Long-series length of cut (1-3/8 inches) supports deep pocket and profile work

Compatibility

Designed as an OEM-style replacement and direct-fit tool for CNC machining centers and manual milling machines accepting a 5/16-inch straight shank end mill in a standard collet or end mill holder.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the shank fully into the collet or toolholder to the recommended engagement depth and torque the retention hardware per the toolholder manufacturer specification. Verify runout with a dial indicator after seating to confirm proper tool concentricity before beginning a cut.