Osg 402-3125 Square End Mill 5/16 Inch 2 Flute Carbide

Product Description

The OSG 402-3125 is a solid carbide square end mill designed for precision milling operations in metalworking and machining applications. It features a 5/16-inch cutting diameter, a 13/16-inch length of cut, and a 2-1/2-inch overall length. The two-flute, right-hand spiral design with a 30-degree helix angle promotes efficient chip evacuation and clean cutting in a wide range of materials. Manufactured from micrograin solid carbide, this end mill delivers rigidity and edge retention suited to demanding production and tool-and-die environments. Licensed machinists and CNC operators are the primary installers and users of this tool.

The OSG 402-3125 is intended for use in vertical machining centers, CNC mills, and manual knee mills where a standard-length, centercutting end mill is required. Its uncoated micrograin carbide construction makes it well suited for use in aluminum, brass, plastics, and softer steels where coating buildup or adhesion is a concern. The regular-length profile fits standard toolholders and collet chucks accepting a 5/16-inch shank. This is a single-end tool from the OSG Series 402 line.

Key Features

• Solid micrograin carbide construction for rigidity and long edge life
• 2-flute geometry with 30-degree right-hand spiral helix for efficient chip removal
• Centercutting design allows plunge entry into the workpiece
• 5/16-inch cutting diameter with matching 5/16-inch shank for direct collet or toolholder mounting
• Uncoated finish suitable for non-ferrous metals, plastics, and softer alloys
• Right-hand cut and right-hand flute direction for standard spindle rotation

Compatibility

Designed as an OEM-style standard end mill for use in any spindle accepting a 5/16-inch round shank, including ER collet chucks, end mill holders, and Weldon-style toolholders configured for that shank diameter.

Installation Notes

Installation and operation should be performed by qualified machinists following applicable shop safety standards. Ensure the spindle is fully stopped and the machine is powered down before inserting or removing the end mill from any toolholder. Verify toolholder runout and proper seating depth before engaging a cut. Do not exceed the rated depth of cut for the tool diameter and material being machined.