Osg 5731100 Square End Mill 7/16 Inch 2 Flute Hss

Product Description

The OSG 5731100 is a square end mill designed for general-purpose milling operations in metalworking and machining applications. It features a 7/16-inch cutting diameter with a 2-flute geometry and a 30-degree helix angle, ground from vanadium high speed steel with a 3% vanadium material grade. The uncoated, spiral-flute design is centercutting, allowing plunge entry as well as peripheral and slot milling. With a 3/8-inch shank diameter and a 2-1/2-inch overall length, it fits standard end mill holders and collet chucks commonly found in vertical mills and machining centers. This tool is installed and used by machinists and CNC operators working in job shop and production environments.

The OSG 5731100 suits regular-length milling tasks in ferrous and non-ferrous metals where high speed steel tooling is appropriate. The 13/16-inch length of cut supports typical slot, profile, and shoulder milling operations. Right-hand cut and right-hand flute geometry make it compatible with standard spindle rotation on conventional and CNC milling machines. It is sold as a single unit and is well-suited for repair shops, tool rooms, and general machining departments requiring a reliable HSS end mill in this size range.

Key Features

• Vanadium high speed steel construction with 3% vanadium material grade for improved wear resistance over standard HSS
• Centercutting design allows direct plunge entry without a pre-drilled hole
• 30-degree helix angle promotes smooth chip evacuation in slot and profile milling
• 2-flute geometry provides adequate chip clearance for softer materials and slotting applications
• Uncoated finish suitable for use with cutting fluids and coolant
• Right-hand cut and right-hand flute for standard spindle rotation compatibility

Compatibility

Designed as a regular-length square end mill compatible with standard 3/8-inch end mill holders and collet chuck systems used in conventional and CNC vertical milling machines.

Installation Notes

This end mill is installed by machinists in end mill holders or collet chucks torqued to the machine tool manufacturer specifications. Ensure the spindle is fully stopped and the machine is in a locked-out state before tooling changes. Verify runout with a dial indicator after seating the shank to avoid premature tool wear or chatter. Use appropriate cutting fluid or coolant for the workpiece material to extend tool life.