Accupro 312599 Corner Radius End Mill 3/8 in 7 Flute

Product Description

The ACCUPRO 312599 is a solid carbide corner radius end mill designed for precision milling in demanding metalworking applications. It features a 3/8 inch diameter with a 1-1/4 inch length of cut and a 3 inch overall length. The 7-flute geometry combined with an AlCrTiN coating delivers high heat resistance and extended tool life in abrasive and hard materials. The 38-degree right-hand spiral helix promotes efficient chip evacuation while maintaining surface finish quality. This is a non-centercutting, single-end tool with a straight cylindrical shank, intended for use by machinists and tool-and-die professionals in CNC and manual milling operations.

This end mill is suited for side milling, profiling, and contouring operations in ferrous and non-ferrous materials where a small corner radius blend is required at the base of a cut. The 0.060 inch corner radius reduces stress concentration at the cutting edge and extends tool life compared to sharp-corner tooling. It is appropriate for finish and semi-finish passes in production environments where tight tolerances and consistent edge geometry are required. The micrograin carbide substrate supports use in high-speed and high-feed applications common in aerospace, mold, and die machining.

Key Features

• 7-flute design increases feed rates and improves surface finish in finishing operations
• AlCrTiN coating provides high-temperature oxidation resistance for hard and abrasive materials
• 0.060 inch corner radius reduces chipping at the cutting edge and improves part geometry at floor-wall intersections
• Micrograin solid carbide substrate delivers rigidity and wear resistance
• 38-degree helix angle promotes smooth chip flow and reduced cutting forces
• Right-hand cut, right-hand flute, non-centercutting single-end configuration for profiling and peripheral milling

Compatibility

Designed as an OEM-style replacement and standard production end mill for CNC machining centers and manual mills accepting a 3/8 inch straight cylindrical shank.

Installation Notes

Installation should be performed by a qualified machinist using an appropriate collet or end mill holder rated for the 3/8 inch shank diameter. Ensure the machine spindle is fully stopped and the tool holder is clean and free of debris before mounting. Verify runout after installation, as excessive runout on a 7-flute tool will accelerate uneven wear. This is a non-centercutting tool and must not be used for plunge cuts directly into solid material.