Osg 82300621 Square End Mill 7/16 in 4 Flute Solid Carbide

Product Description

The OSG 82300621 is a solid carbide square end mill designed for precision milling operations in metalworking and machining applications. With a 0.4375 inch (7/16 inch) mill diameter, 4 flutes, and a stub-length profile, this end mill delivers rigid performance in shallow-to-moderate depth cuts. The Duarise coating reduces friction and extends tool life in demanding materials. Variable helix and variable index geometry help suppress chatter and improve surface finish. Micrograin carbide construction provides the hardness and edge retention needed for high-speed cutting in ferrous and non-ferrous materials. This is a single-end, centercutting tool with right-hand cut and right-hand flute direction.

The OSG 82300621 is suited for CNC machining centers and manual mills in job shop, toolroom, and production environments. The stub length and 0.4375 inch shank diameter make it a practical choice for side milling, slotting, and profiling operations where rigidity is a priority. The straight flute design is appropriate for applications where axial cutting forces need to be minimized. This tool is installed and operated by machinists and CNC operators working to standard machining tolerances.

Key Features

• Solid micrograin carbide construction for hardness and edge retention
• Duarise coating reduces friction and extends tool life
• Variable helix and variable index geometry suppress chatter and improve surface finish
• Centercutting design allows plunge entry
• Stub length profile maximizes rigidity in shallow-cut applications
• Mill diameter tolerance of +0.0000 / -0.0008 inches for precise fit

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide square end mill for standard 7/16 inch collet or end mill holder tooling systems. Part of the OSG Series 8230 product line.

Installation Notes

Installation is performed by qualified machinists or CNC operators. Secure the shank fully in a matched collet or end mill holder and torque to the toolholder manufacturer's specifications. Ensure the spindle and machine are powered down and locked out before changing tooling. Verify runout with a dial indicator before beginning cuts to protect both the tool and the workpiece.