Osg 412-312508 Square End Mill 5/16 in 2 Flute Solid Carbide

Product Description

The OSG 412-312508 is a solid carbide square end mill designed for precision milling of metals and hard materials in machining environments. It features a 5/16-inch cutting diameter with a 1/2-inch length of cut, a matching 5/16-inch shank diameter, and a 2-inch overall length. The two-flute spiral design runs at a 30-degree helix angle with a TiCN (titanium carbonitride) coating that improves wear resistance and surface hardness compared to uncoated carbide. Centercutting geometry allows plunge entry into workpieces. This tool is used by machinists and tool-and-die professionals in CNC and manual milling operations.

The 412-312508 belongs to the OSG Series 412 stub-length end mill line. Its short overall length and stub length-of-cut classification make it well suited for rigid setups where deflection must be minimized, such as shoulder milling, slotting, and side milling in ferrous and non-ferrous materials. The micrograin carbide substrate supports higher cutting speeds and improved edge retention in demanding production environments. Right-hand cut and right-hand flute orientation are standard for conventional CNC spindle configurations.

Key Features

• Solid micrograin carbide construction for extended tool life and edge integrity
• TiCN coating improves wear resistance over uncoated carbide in ferrous applications
• 30-degree helix angle promotes smooth chip evacuation in spiral flute design
• Centercutting capability allows direct plunge milling entry
• Stub length-of-cut range (0.5 to 0.6 inches) provides rigid, low-deflection performance
• Right-hand cut, right-hand flute orientation for standard CNC spindle use

Compatibility

Designed as a direct-fit replacement or standard tooling selection for CNC and manual milling machines accepting a 5/16-inch straight shank end mill in ER collets, end mill holders, or equivalent toolholding systems.

Installation Notes

Installation should be performed by a qualified machinist familiar with proper toolholding and runout requirements. Ensure the spindle is fully stopped and the machine is in a safe, powered-down state before inserting or removing the end mill from the toolholder. Verify shank seating depth and collet torque per the toolholder manufacturer's specifications before beginning a cut. Inspect the cutting edges for chips or coating damage before each use.