Osg 447-250011 Square End Mill 4 Flute Solid Carbide

Product Description

The OSG 447-250011 is a 4-flute solid carbide square end mill designed for precision milling operations in ferrous and non-ferrous materials. Built from micrograin carbide, it offers superior wear resistance and edge retention compared to standard grades. The TiAlN coating extends tool life under high-heat cutting conditions. With an overall length of 2.5 inches and a 0.25-inch shank diameter, this single-end tool is well suited to CNC machining centers and manual mills where tight tolerances and consistent surface finish are required. It is installed and operated by machinists and tooling professionals in machine shop and manufacturing environments.

This end mill is configured for right-hand cutting with a left-hand flute direction, a fixed helix, and no variable index. The micrograin carbide substrate supports demanding applications including slotting, profiling, and peripheral milling in steel, stainless, cast iron, and similar materials. Its compact 2.5-inch overall length makes it appropriate for shorter reach applications where rigidity is a priority. Suitable for use in production shops, job shops, and maintenance machining environments.

Key Features

• 4-flute geometry for improved feed rates and surface finish
• Micrograin solid carbide substrate for edge retention and rigidity
• TiAlN coating for extended tool life in high-temperature cutting
• Right-hand cutting with left-hand flute direction
• Single-end design, 0.25 inch shank diameter
• Fixed helix and fixed index for predictable, stable cutting performance

Compatibility

Designed as a direct-fit replacement or standard tooling option for CNC machining centers and manual milling machines accepting a 0.25-inch round shank end mill.

Installation Notes

Installation is performed by a qualified machinist or tooling technician. Ensure the spindle is fully powered down and the machine is in a locked-out state before changing tooling. Seat the shank fully into the tool holder and torque the retention mechanism according to the tool holder manufacturer specifications. Inspect the cutting edges for any chipping before use.