Osg 5730500 Square End Mill 0.25 in 2 Flute Hss

Product Description

The OSG 5730500 is a square end mill designed for general-purpose milling operations in ferrous and non-ferrous materials. Built from 3% vanadium high speed steel, it delivers good wear resistance and toughness in applications where carbide tooling is not required. The cutter measures 0.25 inches in diameter with a 0.5-inch length of cut and a 3/8-inch shank diameter. A 30-degree helix angle promotes smooth chip evacuation, and the centercutting geometry allows both plunge and peripheral milling. This tool is uncoated and sized for use in manual mills and CNC machining centers alike. Machinists and tool-and-die professionals are the primary users.

This end mill is suited for light-to-medium material removal in job shop, maintenance, and production environments. The regular-length body and 2-5/16-inch overall length make it a practical choice for standard depth pockets, slots, and contour work where reach is not a constraint. The two-flute configuration provides adequate chip clearance when cutting softer steels, aluminum, plastics, and similar materials. It ships individually and is stocked for single-unit purchase.

Key Features

• 0.25 inch cutting diameter with 0.5 inch length of cut
• 3% vanadium high speed steel construction for improved wear resistance over standard HSS
• 30-degree spiral flute helix for efficient chip evacuation
• Centercutting design allows direct plunge entry into workpiece
• Right-hand cut, right-hand flute — standard orientation for conventional and climb milling
• Uncoated finish; compatible with standard cutting fluid or dry cutting depending on material

Compatibility

Designed as an OEM-style replacement or standard tooling selection for milling machines and machining centers accepting a 3/8-inch shank diameter, including collet chucks and end mill holders sized for 3/8-inch tooling.

Installation Notes

A licensed machinist or experienced tool operator should install this end mill into a properly sized collet or end mill holder and torque the retention mechanism per the machine tool manufacturer specifications. Ensure the machine spindle is fully stopped and locked before changing tooling. Verify runout with a dial indicator after seating the tool before beginning a cut. Follow applicable shop safety standards and machine guarding requirements during operation.