Helical Solutions 83191 Square End Mill 3/16 in 4 Flute Carbide

Product Description

The HELICAL SOLUTIONS 83191 is a 4-flute solid carbide square end mill designed for high-performance milling in steel, stainless steel, and cast iron. Built on a variable index geometry with a 35-degree helix angle, it delivers reduced chatter and improved chip evacuation compared to standard equal-pitch tools. The 3/16-inch diameter and 5/16-inch length of cut make it well suited for slot milling, profiling, and finishing passes in tight workspaces. The Tplus coating adds wear resistance and heat tolerance, extending tool life in demanding ferrous applications. Licensed machinists and CNC operators in production shops and job shops are the primary users of this tool.

This end mill is engineered for applications involving steel, stainless steel, and cast iron workpieces. Its compact 3/16-inch diameter suits precision contouring, small-feature pocketing, and finishing operations on components where larger tooling cannot reach. The 2-inch overall length and straight shank allow direct mounting in standard collet chucks and end mill holders without extended-reach adapters. The center-cutting geometry enables plunge entry, adding flexibility to the machining workflow.

Key Features

• Variable index flute spacing reduces harmonic vibration during aggressive cuts
• 35-degree right-hand helical flutes promote efficient chip flow out of the cut zone
• Solid carbide construction provides rigidity and wear resistance in ferrous materials
• Tplus coating improves thermal resistance and extends tool life on stainless steel and cast iron
• Center-cutting design allows direct plunge milling without pre-drilled entry holes
• Single-end configuration with straight shank fits standard collet and end mill holder systems

Compatibility

Designed for use in CNC machining centers and manual mills with standard collet chucks or end mill holders accepting a 3/16-inch straight shank. Primary workpiece materials are steel, stainless steel, and cast iron as specified by the manufacturer.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is powered down before loading or removing tooling. Seat the shank fully into the collet or holder to the recommended minimum engagement depth per your machine tool guidelines. Verify runout with a dial indicator before beginning the cut, as excessive runout accelerates edge wear on small-diameter carbide tools.