Kennametal 6086556 Square End Mill 5/64 in 4 Flute Carbide

Product Description

The KENNAMETAL 6086556 is a single-end square end mill engineered for precision milling in ferrous and hard-to-machine materials. Built from solid carbide with a TiAlN coating, this tool delivers high heat resistance and extended tool life in demanding cutting environments. It measures 5/64 inch (0.0781 inch) in diameter with a 3/16 inch length of cut and a 1/8 inch shank diameter. The 4-flute, right-hand spiral configuration with a 30-degree helix angle promotes efficient chip evacuation while maintaining a clean, square shoulder cut. Licensed machinists and tool-and-die professionals are the primary installers of this end mill.

This end mill is suited for milling steel, stainless steel, and cast iron in both production and prototype environments. The small diameter makes it well-suited for fine-feature work, slot milling, and tight-tolerance profiling where tool control is critical. Its centercutting capability allows direct plunge entry. The 1-1/2 inch overall length keeps deflection low at this diameter. It is appropriate for CNC machining centers and manual knee mills running at correct surface footage for carbide tooling in ferrous stock.

Key Features

• Solid carbide construction from material grade KC633M for rigidity and wear resistance
• TiAlN coating for elevated heat resistance and extended tool life in ferrous materials
• 4-flute, right-hand spiral with 30-degree helix angle for balanced chip load and surface finish
• Centercutting design enables direct plunge milling without pre-drilling
• Single-end configuration — 5/64 inch cutting diameter with 3/16 inch length of cut
• No chipbreaker, no variable helix, no coolant-through — straightforward tool geometry for consistent results

Compatibility

Designed for use with standard 1/8 inch collets or end mill holders on CNC machining centers and manual mills. Primary workpiece materials are steel, stainless steel, and cast iron per material codes P, M, and K. Part of the Kennametal 4SE.IS-R-L-X series.

Installation Notes

Installation requires a clean, properly sized 1/8 inch collet or end mill holder with adequate clamping torque per machine manufacturer specifications. Verify runout at the spindle before cutting — excessive runout at this diameter accelerates tool wear and reduces accuracy. Always set spindle speed and feed rate appropriate for solid carbide tooling in the target workpiece material. Handle carbide end mills carefully to avoid chipping the cutting edges during storage and setup.