Osg 5805200 Square End Mill 1 in Shank 2 Flute Cobalt

Product Description

The OSG 5805200 is a cobalt square end mill designed for milling operations on steel, stainless steel, and other ferrous and non-ferrous metals. Built from M42 cobalt high-speed steel, this single-end tool features a 1 inch cutting diameter, a 1-5/8 inch length of cut, and a 4-1/8 inch overall length. The 30-degree spiral flute geometry promotes efficient chip evacuation while the centercutting design allows plunge entry. Two flutes provide clearance for heavier chip loads in tougher materials. This tool is uncoated and comes ready for standard machine tool setups where coatings are not required or where the operator applies their own lubrication strategy.

The OSG 5805200 is suited for general-purpose milling, slotting, and profiling in job shop and production environments. The regular-length configuration fits standard vertical machining centers and manual mills using a 1 inch collet, end mill holder, or matching shank toolholder. Right-hand cut and right-hand flute orientation are standard for conventional spindle rotation. The Series 580 designation identifies it within OSG cobalt end mill product line for straightforward reordering and toolcrib management.

Key Features

• M42 cobalt high-speed steel construction for heat and wear resistance in ferrous materials
• 1-5/8 inch length of cut with 1 inch shank diameter for rigid setup in standard toolholders
• 30-degree helix angle spiral flute for improved chip evacuation and smooth cutting action
• Centercutting geometry enables direct plunge milling without pre-drilled entry
• 2-flute design provides open chip gullets for effective material removal in slotting operations
• Uncoated finish suitable for use with cutting fluids in a wide range of machining applications

Compatibility

Designed as an OEM-style replacement or standard tooling addition for 1 inch shank end mill holders, collet chucks, and shrink-fit holders on vertical machining centers and manual knee mills.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the spindle fully stopped and the machine locked out per shop safety procedures. Ensure the toolholder bore and shank are clean and free of chips or burrs before seating the end mill. Confirm runout with a dial indicator before beginning the cut. Follow the machine manufacturer and tooling manufacturer recommended speeds and feeds for the workpiece material.