Accupro 12182847 Square End Mill 5/16 in 4 Flute Carbide

Product Description

The ACCUPRO 12182847 is a solid carbide square end mill designed for precision milling operations in metal fabrication and machining environments. Built from micrograin carbide substrate and finished with an AlTiN (Aluminum Titanium Nitride) coating, this tool handles hardened steels, stainless, and high-temp alloys with extended tool life compared to uncoated alternatives. It runs a 4-flute, spiral configuration with a 40-degree helix angle and centercutting capability, making it suitable for both plunge and peripheral cuts. Shank diameter measures 5/16 inches with a tolerance of -0.0001 to -0.0004 inches for consistent tool holder fit.

This end mill fits stub-length applications where rigidity matters more than reach. It carries a 5/16-inch mill diameter with a 1/2-inch length of cut and a 2-inch overall length, making it well-suited for shallow pockets, slots, and profiling passes on CNC machining centers and manual knee mills. Right-hand cut and right-hand flute geometry is standard for conventional milling setups. Machinists and tool and die shops running high-volume production or precision prototype work will find this a reliable choice for tight-tolerance work.

Key Features

• Solid micrograin carbide construction for wear resistance and edge stability
• AlTiN finish extends tool life in ferrous and high-temp alloy cutting
• 4-flute spiral design with 40-degree helix for efficient chip evacuation
• Centercutting geometry allows direct plunge entry without pre-drilling
• Stub length (2 inches OAL) provides maximum rigidity for chatter reduction
• Mill diameter tolerance of +0.000/-0.002 inches for consistent dimensional accuracy

Compatibility

Designed as an OEM-style replacement or standard tooling option for CNC machining centers and manual mills accepting 5/16-inch straight-shank end mills in ER, Weldon, or collet-style tool holders.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Seat the shank fully into the tool holder and torque the retention mechanism to the tool holder manufacturer specification. Verify runout with a dial indicator before commencing cuts to protect both the tool and the workpiece.