Osg VG441-2501 Square End Mill 1/4 in 4 Flute Solid Carbide

Product Description

The OSG VG441-2501 is a solid carbide square end mill designed for precision milling in demanding machining environments. Built on the VG441 series platform, this single-end tool features a 0.25 inch cutting diameter, a 0.75 inch length of cut, and a 2.5 inch overall length. The micrograin carbide substrate delivers hardness and wear resistance suited for high-speed cutting applications. A TiAlN coating adds thermal protection and extends tool life in dry or semi-dry cutting conditions. Four spiral flutes with a variable index geometry reduce harmonic vibration during the cut, improving surface finish and dimensional accuracy.

This end mill is used in CNC machining centers and manual mills for slotting, profiling, and peripheral milling operations. The 0.25 inch shank diameter fits standard collets and end mill holders common in both production and job-shop settings. The right-hand cut and right-hand flute configuration match conventional spindle rotation. The tool is not center-cutting, so it is not suited for plunge entry without a pre-drilled pilot hole or ramping strategy. It is appropriate for use in ferrous and non-ferrous materials where TiAlN coatings perform effectively.

Key Features

• Solid micrograin carbide construction for improved hardness and edge retention
• TiAlN finish provides thermal resistance in high-speed and dry machining conditions
• Variable index flute spacing reduces chatter and harmonic vibration
• Four spiral flutes for efficient chip evacuation in slotting and profiling
• Right-hand cut and right-hand flute for standard CNC spindle compatibility
• Single-end design with a 0.25 inch shank for use in collet chucks and end mill holders

Compatibility

Designed as an OEM-style replacement and standard fit for CNC machining centers and manual mills accepting a 0.25 inch shank end mill holder or collet. Part of the OSG VG441 series.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Power down and lock out the spindle before mounting or removing the tool. Seat the shank fully into the collet or holder to the recommended minimum engagement depth before torquing the retention hardware. This tool is not center-cutting and must not be used for direct plunge cuts without a ramp or pre-drilled entry.