OSG 44100511 3/32in 2-Fl AlTiN Solid Carbide Ball End Mill

The OSG 44100511 is a new solid carbide ball nose end mill from OSG's LIST 4410 series, featuring a 3/32" (2.381 mm) cutting diameter, 3/32" length of cut, 2-flute geometry, and a 1/4" straight shank — all confirmed from the package label visible in the photos. The LIST 4410 series is OSG's miniature ball end mill line manufactured in Japan, ground from submicron-grain carbide substrate and coated with AlTiN (aluminum titanium nitride), which provides the dark gray-black finish visible on the cutting zone and flutes in the photos; AlTiN coating delivers high hardness (≈3300 HV), excellent oxidation resistance up to ~800°C, and substantially extends tool life in ferrous and hardened steel applications compared to uncoated or TiN-coated tools. The long-reach taper neck profile — clearly visible in the photos — reduces interference in deep-cavity and rib milling operations while maintaining rigidity, making this tool suited for die/mold work, 3D contouring, and precision profiling in steel, stainless steel, cast iron, and hardened materials up to approximately 65 HRC. Compatible with standard 1/4" ER, collet, and shrink-fit toolholders; made in Japan.

Product Specifications