Osg 414-3937 Square End Mill 0.3937 in 4 Flute Carbide

Product Description

The OSG 414-3937 is a solid carbide square end mill designed for high-precision milling operations in metalworking and machining applications. With a 0.3937-inch (10 mm) mill diameter and a 0.5512-inch (14 mm) length of cut, this stub-length end mill delivers rigid, stable cutting performance in confined workspaces. The 4-flute, spiral-flute geometry with a 30-degree helix angle promotes efficient chip evacuation while maintaining a smooth surface finish. Manufactured from micrograin solid carbide, this tool is suited for demanding cuts in ferrous and non-ferrous materials. It is installed and operated by CNC machinists and tool-room professionals.

The OSG 414-3937 is suited for slot milling, peripheral milling, and profiling operations on machining centers and CNC milling equipment. The stub length configuration provides added rigidity, making it a preferred choice when minimal tool overhang is required. The centercutting design allows for plunge entry, expanding application flexibility. The uncoated finish makes it a solid baseline option for operations where coated tools are not specified or where re-grinding is planned. Typical use cases include general-purpose milling in steel, aluminum, brass, and similar materials.

Key Features

• 0.3937-inch (10 mm) mill diameter with 0.5512-inch (14 mm) length of cut
• 4-flute spiral geometry with 30-degree helix for efficient chip flow
• Micrograin solid carbide construction for wear resistance and edge retention
• Centercutting capability allows direct plunge entry into workpiece
• Right-hand cut, right-hand flute configuration — standard orientation for CNC milling
• Stub length design maximizes rigidity and minimizes deflection
• Uncoated finish suitable for re-grinding or base material applications

Compatibility

Designed as an OEM-style solid carbide square end mill for use in standard CNC milling machines and machining centers accepting a 0.3937-inch (10 mm) shank diameter.

Installation Notes

This end mill is installed by qualified CNC machinists or tool-room technicians. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Secure the shank fully within the tool holder to the appropriate engagement depth per the holder manufacturer guidelines. Verify runout with a dial indicator before beginning production cuts to prevent premature tool wear or workpiece damage.