Osg 464-2500 Square End Mill 1/4 in 4 Flute Solid Carbide

Product Description

The OSG 464-2500 is a solid carbide square end mill designed for precision milling in ferrous and non-ferrous materials. With a 0.25-inch mill diameter, a 1.125-inch length of cut, and a 3-inch overall length, this tool fits standard 0.25-inch shank toolholders and collets. The four-flute, spiral design with a 30-degree helix angle provides efficient chip evacuation and smooth cutting action. Micrograin carbide construction delivers rigidity and edge retention, making it well-suited for tight-tolerance profiling, slotting, and peripheral milling operations in CNC machining environments.

This end mill is applicable in job shop, production, and tool-and-die settings where consistent dimensional accuracy is required. Its centercutting capability allows plunge entry into the workpiece without a pre-drilled hole, expanding its use in pocketing and ramping operations. The long-length classification provides additional reach for deeper features. Right-hand cut and right-hand flute geometry are standard for conventional CNC mill spindle rotation. Machinists and CNC operators in aerospace, automotive, and general metalworking applications will find this tool suitable for steel, aluminum, and similar materials.

Key Features

• 0.25-inch mill diameter with matching 0.25-inch shank for direct collet mounting
• Four spiral flutes with 30-degree helix angle for efficient chip flow and reduced cutting forces
• Centercutting design allows direct plunge milling without pre-drilling
• Micrograin solid carbide construction for high edge retention and dimensional stability
• Right-hand cut, right-hand flute geometry for standard CNC spindle compatibility
• Long-length series with 1.125-inch length of cut and 3-inch overall length for deeper reach

Compatibility

Designed as an OEM-style replacement and standard tooling option for CNC vertical and horizontal milling machines accepting 0.25-inch shank end mills. Part of the OSG Series 464 product line.

Installation Notes

Installation is performed by qualified machinists or CNC operators. Secure the shank fully within the collet or toolholder to the recommended gauge-line depth before tightening. Power down and lock out the spindle before changing tooling. Verify spindle rotation direction matches the right-hand cut specification of this tool prior to operation.