Kennametal 6433259 Square End Mill 0.5mm 2-flute Altin

Product Description

The KENNAMETAL 6433259 is a solid carbide square end mill designed for precision milling in demanding metalworking applications. With a 0.5 mm mill diameter and a 0.70 mm length of cut, this micro end mill is built for fine-detail work where accuracy at small scales is critical. The AlTiN coating provides thermal resistance and hardness at the cutting edge, extending tool life in abrasive and high-heat conditions. A 30-degree helix angle promotes efficient chip evacuation while maintaining edge stability. This tool is installed by machinists and tool-and-die professionals working with CNC machining centers and high-precision milling setups.

This end mill is suited for milling steel, cast iron, and hardened materials, corresponding to ISO material codes P, K, and H. The extended reach design and 6 mm straight shank make it compatible with standard collet systems used in CNC vertical and horizontal machining centers. It is a single-end, right-hand cutting tool with right-hand flute direction, making it appropriate for conventional CNC climb and conventional milling passes on small-feature geometries such as slots, pockets, and contours in tooling and die work.

Key Features

• 0.5 mm mill diameter for micro and fine-detail milling operations
• AlTiN coating for enhanced heat resistance and tool life on ferrous and hardened materials
• Solid carbide construction in material grade KCPM15 for rigidity and wear resistance
• 30-degree helix angle promotes smooth cutting action and chip evacuation
• Extended reach design with 6 mm straight shank for compatibility with standard collet holders
• Center-cutting capability allows plunge entry without a pre-drilled pilot hole

Compatibility

Designed for use on steel, cast iron, and hardened materials (ISO P, K, H). Part of the KENNAMETAL F2AH-WSM series. Fits standard 6 mm collet systems on CNC milling machines.

Installation Notes

Installation and tool changes must be performed with the machine spindle fully stopped and all power isolated per shop lockout/tagout procedures. Seat the straight shank fully and evenly in a clean, undamaged collet to prevent runout that could break this micro-diameter tool. Confirm runout with a dial indicator before beginning a cut. Handle micro end mills with care — the 0.5 mm cutting diameter is susceptible to breakage from improper clamping, excessive feed rates, or side loading beyond the tool's rated parameters.