Helical Solutions 81374 Square End Mill 3/4 in 3 Flute

Product Description

The HELICAL SOLUTIONS 81374 is a 3-flute solid carbide square end mill designed for high-performance material removal in aluminum and non-ferrous metals. With a 0.75-inch mill diameter and a 2.75-inch length of cut, this tool handles deep-pocket milling, slotting, and profiling in a single setup. The 35-degree right-hand helical flute geometry promotes efficient chip evacuation, reducing heat buildup and tool wear. A ZrN (Zplus) coating further protects the cutting edges and reduces built-up edge on sticky non-ferrous materials. This end mill is intended for use by machinists and CNC operators running production or job-shop environments.

This end mill is engineered specifically for aluminum and non-ferrous workpiece materials, making it a go-to tool in aerospace, automotive, and general precision machining shops. The single-end, straight-shank configuration fits standard ER collet chucks, end mill holders, and shrink-fit toolholders with a 0.75-inch bore. Its 5.0-inch overall length provides reach for deeper features while maintaining rigidity. It is suited for both horizontal and vertical machining centers running aggressive feeds and speeds on non-ferrous stock.

Key Features

• Solid carbide construction for rigidity and long tool life in non-ferrous applications
• 3-flute, 35-degree right-hand helix promotes fast chip evacuation in aluminum
• ZrN (Zplus) coating reduces friction and built-up edge on sticky materials
• Center-cutting design allows plunge entry without a pre-drilled pilot hole
• 0.75-inch shank diameter matches mill diameter for direct collet or end mill holder mounting
• 5.0-inch overall length with 2.75-inch length of cut supports deep-pocket operations

Compatibility

Designed for use in aluminum and non-ferrous machining applications as part of the HELICAL SOLUTIONS End Mills for Aluminum 3 Flute Square 35 Degree Helix series. Compatible with any 0.75-inch bore toolholder system including ER collet chucks and end mill holders.

Installation Notes

Installation and tool changes must be performed with the machine in a full stop, locked-out state per OSHA lockout/tagout procedures. Torque the toolholder to the holder manufacturer's specifications and verify runout with a dial indicator before running at speed. Inspect collet and bore for contamination or wear before seating the shank. Confirm spindle direction is set to right-hand rotation before engaging the cut.