Osg 5638000 Square End Mill 3/16 in 2 Flute Cobalt Double End

Product Description

The OSG 5638000 is a cobalt square end mill designed for precision milling operations in metalworking applications. Built from M42 cobalt high-speed steel, this double-end tool features a 3/16 inch cutting diameter, a 1/2 inch length of cut, and a 2-1/4 inch overall length. The 30-degree spiral flute geometry promotes efficient chip evacuation and reduces heat buildup during cuts. With two flutes and a centercutting design, this end mill handles plunge cutting, slotting, and peripheral milling. It is suited for machinists and tool-and-die professionals working on ferrous and non-ferrous materials in manual or CNC machine setups.

This end mill fits standard milling operations in job shop, maintenance, and production environments. The 3/16 inch shank diameter matches common collet and chuck setups on knee mills, bed mills, and CNC machining centers. The regular-length configuration keeps it stable in tight-tolerance work. The double-end design extends tool life by providing two usable cutting ends before the tool is retired, making it a practical choice for high-frequency applications where tool economy matters.

Key Features

• M42 cobalt construction for improved heat and wear resistance over standard HSS
• Double-end design provides two cutting ends per tool
• Centercutting capability allows direct plunge entry into workpieces
• 30-degree helix angle promotes smooth chip flow and reduced cutting forces
• Right-hand cut and right-hand flute orientation for standard spindle operation
• Uncoated finish suitable for a wide range of general milling applications

Compatibility

Designed as an OEM-style replacement or direct-use end mill for standard 3/16 inch collet and end mill holder setups on manual and CNC milling machines.

Installation Notes

Installation should be performed by a qualified machinist following standard tooling procedures. Ensure the machine spindle is fully powered down and at rest before inserting or removing any end mill. Seat the shank fully into the collet or tool holder and torque the retention mechanism according to the machine or toolholder manufacturer guidelines. Verify runout with a dial indicator before beginning any cut.