Osg 5200200 Square End Mill 3/16 in 2 Flute Cobalt

Product Description

The OSG 5200200 is a cobalt square end mill designed for general-purpose milling in demanding shop environments. Built from M42 cobalt high-speed steel, this tool holds up in harder workpiece materials where standard HSS tools wear prematurely. It runs a 3/16 inch cutting diameter with a 7/16 inch length of cut and a 30-degree helix angle on its two spiral flutes. The 3/8 inch shank fits standard collets and end mill holders. This is a centercutting design, meaning it can be plunged directly into a workpiece. It is uncoated and intended for applications where a coated tool would be over-specified or where regrinding is planned.

The OSG 5200200 fits production and job-shop applications where a small-diameter, short-reach end mill is needed for slotting, profiling, or pocketing. The regular-length geometry keeps the tool rigid in setups where tool deflection is a concern. Right-hand cut and right-hand flute orientation make it compatible with standard spindle rotation on most CNC machining centers and manual knee mills. It is suited for use on steel, stainless, cast iron, and other ferrous materials where cobalt tooling is the standard choice.

Key Features

• M42 cobalt construction for improved heat and wear resistance over standard HSS
• Centercutting geometry allows direct plunge entry into workpieces
• 30-degree helix angle on spiral flutes for efficient chip evacuation
• Regular-length design minimizes deflection in close-tolerance cuts
• Right-hand cut and right-hand flute for standard CNC and manual mill spindles
• Uncoated finish suitable for regrinding or applications not requiring a coating

Compatibility

Designed as an OEM-style production end mill for use in standard 3/8 inch collets, end mill holders, or shrink-fit toolholders on CNC machining centers and manual mills requiring a small-diameter cobalt square end mill.

Installation Notes

Installation and use should be performed by a qualified machinist or tooling technician. Ensure the machine spindle is fully stopped and locked out before changing tooling. Secure the shank fully in the collet or holder to the recommended engagement depth to prevent pullout under load. Do not exceed the tool manufacturers recommended speeds and feeds for the workpiece material and depth of cut.