Accupro 12179678 Corner Radius End Mill 3/8 in 3 Flute Altin

Product Description

The ACCUPRO 12179678 is a single-end corner radius end mill designed for precision milling in ferrous and hardened materials. Built from micrograin solid carbide and coated with AlTiN (aluminum titanium nitride), it handles high-heat cutting environments where tool life and edge retention are critical. The 0.02-inch corner radius reduces stress concentration at the cutting edge and produces a consistent, radiused floor in pocketing and profiling operations. With 3 flutes and a 35-degree right-hand helix, this end mill balances chip evacuation with surface finish quality. Centercutting capability allows plunge entry without a pre-drilled hole.

This end mill is suited for CNC machining centers and manual mills running ferrous metals, stainless steel, hardened steels, and similar alloy materials. The 3/8-inch diameter and 1/2-inch length of cut make it a practical choice for shallow pocket milling, profile contouring, and slot work where a corner radius is required on the floor blend. The AlTiN coating adds oxidation resistance, making it effective in dry or minimal-lubrication cutting strategies. Machinists and tool-and-die shops working in job shop or production environments will find this a reliable workhorse tool for general-purpose corner radius work.

Key Features

• Micrograin solid carbide substrate for rigidity and edge retention in hard materials
• AlTiN coating provides heat and oxidation resistance, extending tool life in dry cutting
• 0.02-inch corner radius reduces edge chipping and produces consistent radiused floor blends
• 3 right-hand flutes with 35-degree helix angle balance chip clearing and finish quality
• Centercutting design allows direct plunge entry into the workpiece
• Single-end configuration with matched 3/8-inch shank and cutter diameter for standard collet compatibility

Compatibility

Designed as an OEM-style replacement or direct-fit tool for CNC machining centers and manual milling machines accepting a 3/8-inch straight shank collet or end mill holder.

Installation Notes

Installation and use should be performed by a qualified machinist or CNC operator familiar with proper tool holding and feeds-and-speeds selection. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the shank fully into the collet or end mill holder and torque the retention mechanism per the toolholder manufacturer specifications. Verify runout with a dial indicator before commencing a cut to avoid premature edge wear or workpiece damage.