Helical Solutions 04167 Square End Mill 5/16 in 3 Flute Carbide

Product Description

The HELICAL SOLUTIONS 04167 is a 3-flute solid carbide square end mill designed for high-performance aluminum milling. It features a 5/16 inch (0.3125 inch) mill diameter with a matching 5/16 inch straight cylindrical shank. The 35-degree right-hand helical flute geometry promotes efficient chip evacuation and reduces built-up edge when cutting aluminum alloys. A Zplus coating adds lubricity and surface hardness to extend tool life in non-ferrous applications. The reduced neck design provides extended reach of 1.125 inches, making this end mill well suited for profiling slots and pockets where clearance is a factor. Licensed machinists and CNC operators install this tool in vertical machining centers and milling machines.

This end mill is intended for aluminum and other non-ferrous materials. The reduced neck, extended reach geometry allows access to deeper features without sacrificing rigidity at the cutting zone. With a length of cut of 0.4375 inch (7/16 inch) and an overall length of 4 inches, it fits standard CNC tool holders and manual mills configured for 5/16 inch shank tooling. It is centercutting, allowing plunge entry directly into the workpiece.

Key Features

• 5/16 inch diameter solid carbide construction for rigidity and wear resistance
• 3-flute, 35-degree right-hand helical geometry optimized for aluminum chip evacuation
• Zplus coating improves lubricity and extends tool life in non-ferrous cuts
• Reduced neck design with 1.125 inch reach length for deeper feature access
• Centercutting capability allows direct plunge milling
• Straight cylindrical shank fits standard 5/16 inch collets and tool holders

Compatibility

Designed as a direct-fit replacement or new installation for CNC machining centers and manual mills accepting 5/16 inch straight shank tooling; confirmed for use in aluminum and non-ferrous milling applications per the HELICAL SOLUTIONS End Mills for Aluminum 3 Flute Square 35 degree Helix Reduced Neck series.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the spindle is fully stopped and the machine is in an e-stop or locked-out state before changing tooling. Seat the shank fully into a clean, properly torqued collet or end mill holder to the depth recommended by the tool holder manufacturer. Verify runout with a dial indicator before beginning a production cut, as excessive runout accelerates wear on carbide tooling.