Accupro 95168543 Corner Radius End Mill 5/16 in 5 Flute

Product Description

The ACCUPRO 95168543 is a 5-flute solid carbide corner radius end mill designed for precision milling operations in demanding shop environments. The tool features a 5/16 inch (0.3125 inch) mill diameter, a 0.0200 inch corner radius, and an AlTiN coating that extends tool life in high-temperature cutting conditions. With a variable helix geometry and centercutting capability, it handles plunge entry, profiling, and finish milling in hardened steels, stainless, and other difficult-to-machine alloys. Machinists and tool-and-die professionals working on CNC machining centers will find this end mill sized for detail work and corner finishing.

This end mill is suited for use on CNC vertical and horizontal milling centers in job shops, tool rooms, and production machining environments. Its 7/16 inch length of cut and 2-1/8 inch extended reach make it practical for profiling pockets and contoured features where a standard-reach tool would interfere with workpiece walls. The right-hand spiral flutes and right-hand cutting direction are compatible with conventional CNC spindle setups. The single-end design is typical for solid carbide tooling of this diameter class.

Key Features

• 5/16 inch diameter solid carbide construction from micrograin carbide grade for rigidity and wear resistance
• AlTiN coating for heat resistance and extended tool life in ferrous and high-hardness materials
• 0.0200 inch corner radius reduces stress concentration at profile corners and improves surface finish
• Variable helix geometry reduces chatter and harmonics during aggressive cuts
• Centercutting design allows direct plunge entry without a pre-drilled pilot hole
• Extended reach with 2-1/8 inch reach length and 0.2813 inch neck diameter for deep-feature access

Compatibility

Designed as an OEM-style solid carbide corner radius end mill for use in standard 5/16 inch collet or end mill holders on CNC milling machines and machining centers.

Installation Notes

Installation is performed by a machinist or CNC operator using a properly torqued collet chuck or end mill holder sized to the 5/16 inch shank diameter. Verify shank diameter tolerance acceptance with your toolholder before seating. Ensure the machine spindle is fully stopped and the tool-change mode is active before inserting or removing the end mill. Confirm runout with a dial indicator after clamping, as excessive runout will reduce tool life and surface finish quality on a variable-helix tool of this diameter.