Osg 5827500 Square End Mill 0.0984 in 2 Flute Cobalt

Product Description

The OSG 5827500 is a double-end, square-profile cobalt end mill designed for precision milling in demanding metalworking applications. Built from M42 cobalt high-speed steel, it delivers excellent heat and wear resistance compared to standard HSS tooling. The cutter measures 0.0984 inches in diameter with a 9/32-inch (0.2813-inch) length of cut and a 3/16-inch shank diameter, making it well-suited for fine-detail slot milling, profiling, and step cutting in small-bore work. The 30-degree spiral helix and centercutting geometry allow for plunge entries and smooth chip evacuation in tight workspaces. Machinists and toolroom operators install this end mill in manual knee mills, CNC machining centers, and precision drilling setups.

The OSG 5827500 is used in general-purpose metalworking environments where small-diameter, high-accuracy cutting is required. Its double-end design provides a second cutting edge when the first end reaches the end of its service life, extending tool utilization. The regular length configuration and right-hand cut with right-hand spiral flute make it compatible with standard spindle rotation on both manual and CNC machines. Typical applications include mold work, die repair, prototype machining, and production runs on ferrous and non-ferrous metals where dimensional accuracy is critical.

Key Features

• M42 cobalt construction for improved heat resistance over standard HSS in hard or abrasive materials
• Double-end design provides two usable cutting ends, extending tool life per unit
• Centercutting geometry allows direct plunge milling without a pre-drilled entry hole
• 30-degree helix angle promotes smooth chip flow and reduced cutting forces in slot and profile milling
• Uncoated finish suitable for use with or without cutting fluids across a broad range of materials
• Right-hand cut, right-hand flute configuration for use in standard CNC and manual spindle setups

Compatibility

Designed as an OEM-style replacement or standard tooling selection for machine setups requiring a 3/16-inch shank, 0.0984-inch diameter square end mill in OSG Series 582 regular-length geometry.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Power down and lock out the machine spindle before loading or unloading the tool. Seat the 3/16-inch shank fully into a matching collet or end mill holder and torque the retaining nut or set screw according to the toolholder manufacturer specifications. Verify runout with a dial indicator before beginning a cut, particularly at this diameter, where even minor misalignment will affect surface finish and tool life.