Osg 5812100 Square End Mill 0.6299 in 4 Flute Cobalt

Product Description

The OSG 5812100 is a 4-flute cobalt square end mill designed for general-purpose milling operations in metalworking and machining environments. Built from M42 cobalt high-speed steel, this tool delivers solid wear resistance and heat tolerance in demanding cutting conditions. The cutter measures 0.6299 inches (16.00 mm) in diameter with a 1-5/8 inch length of cut, a 5/8 inch shank diameter, and a 3-3/4 inch overall length. The 30-degree right-hand spiral flute geometry promotes efficient chip evacuation and smooth cutting action. This is an uncoated, single-end tool in the regular length category, part of the OSG Series 581 line.

This end mill is suited for milling slots, profiles, and faces in ferrous and non-ferrous materials where cobalt tooling is specified. It is a right-hand cut, right-hand flute configuration, making it compatible with standard CNC machining centers and manual milling machines. The non-centercutting design means it is intended for side milling and profiling applications rather than direct plunge cutting. Machinists and toolroom operators working in job shops, production floors, or maintenance machining environments will find this a reliable general-purpose choice for medium-material removal operations.

Key Features

• M42 cobalt high-speed steel construction for improved heat and wear resistance
• 4 spiral flutes with 30-degree helix angle for efficient chip evacuation
• Right-hand cut and right-hand flute configuration for standard spindle compatibility
• Uncoated finish suitable for a range of metalworking applications
• Non-centercutting design optimized for side milling and profiling
• Regular length Series 581 tool for consistent dimensional performance

Compatibility

Designed for use in standard milling machine spindles and CNC machining centers accepting a 5/8 inch shank diameter, within the OSG Series 581 end mill line.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and locked out before inserting or removing the end mill from the tool holder. Use an appropriate collet or end mill holder sized for a 5/8 inch shank and verify runout with a dial indicator before beginning a cut. Do not use this tool for plunge cutting, as it is a non-centercutting design.