Accupro 12183712 Corner Radius End Mill 3/8 in 4 Flute Altin

Product Description

The ACCUPRO 12183712 is a solid carbide corner radius end mill engineered for precision milling in demanding metalworking applications. It features a 3/8 inch diameter, a 1-1/2 inch length of cut, and a 0.06 inch corner radius that reduces stress concentrations at the cutting edge and extends tool life in hardened and abrasive materials. The AlTiN coating provides high-temperature oxidation resistance, making this tool well-suited for dry or high-speed machining of ferrous alloys, stainless steel, and hardened steels. With 4 right-hand spiral flutes and a 40-degree helix angle, this centercutting end mill delivers smooth chip evacuation and stable cutting performance. It is used by machinists and toolroom professionals in CNC machining centers and manual mills.

This extra-long end mill with a 6 inch overall length and 3/8 inch shank diameter is designed for applications that require extended reach into deep pockets, slots, or cavities. The micrograin carbide substrate and AlTiN coating make it a strong choice for production milling of aerospace, die and mold, and general precision components where surface finish and dimensional accuracy are critical. The single-end, centercutting design allows plunge entry and contour milling in a single setup.

Key Features

• Solid micrograin carbide substrate for improved edge retention and wear resistance
• AlTiN coating supports high-speed, high-temperature cutting in ferrous and hardened materials
• 0.06 inch corner radius reduces chipping and improves workpiece surface finish at edge transitions
• 40-degree helix angle promotes efficient chip evacuation and reduces cutting forces
• Centercutting design allows direct plunge entry without a pre-drilled pilot hole
• Extra-long 6 inch OAL with 1-1/2 inch length of cut for deep-reach milling applications

Compatibility

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

Installation Notes

Installation should be performed by a qualified machinist following established toolholding practices. Ensure the machine spindle is fully stopped and locked out before mounting or removing the tool. Use a properly sized collet or end mill holder to achieve full shank engagement and minimize runout. Verify tool projection and reach before initiating a cut, and consult machine and toolholder manufacturer specifications for maximum RPM and feed rate guidelines.