Osg 70401416 Square End Mill 3/8 in 4 Flute Solid Carbide

Product Description

The OSG 70401416 is a solid carbide square end mill designed for precision milling operations across a range of metalworking and machining applications. Built on OSG Series 7040, it features a 3/8 inch cutting diameter, a 7/8 inch length of cut, and a 4-flute spiral geometry with a 30-degree helix angle. The diamond finish coating improves surface hardness and lubricity, supporting longer tool life in demanding cuts. Micrograin carbide construction provides the rigidity needed for tight tolerances, with a mill diameter tolerance of +0.000/-0.002 inches. This tool is intended for use by machinists and tool-and-die professionals operating CNC mills and manual milling machines.

The OSG 70401416 is suited for slotting, profiling, and peripheral milling in ferrous and non-ferrous materials where a regular-length end mill is appropriate. The centercutting design allows plunge entry, adding versatility for pocketing and ramping operations. Right-hand cut and right-hand flute configuration make it compatible with standard spindle setups. The 3/8 inch shank diameter fits standard collets and end mill holders commonly found in both vertical and horizontal milling setups.

Key Features

• Solid micrograin carbide construction for rigidity and dimensional stability
• Diamond finish surface treatment for improved wear resistance
• 4-flute spiral design with 30-degree helix angle for balanced chip evacuation and surface finish
• Centercutting geometry enables plunge milling and ramping
• Right-hand cut, right-hand flute configuration for standard spindle compatibility
• Regular length profile with 7/8 inch length of cut suited for general-purpose milling depths

Compatibility

Designed as a general-purpose OEM-style solid carbide square end mill compatible with standard 3/8 inch collets, ER collet chucks, and end mill holders used in CNC and manual milling applications. Part of the OSG Series 7040.

Installation Notes

Installation should be performed by a qualified machinist following standard toolholding procedures. Ensure the spindle is fully stopped and the machine is locked out before changing tooling. Verify collet or holder bore size matches the 3/8 inch shank diameter before tightening. Follow the machine manufacturer and OSG recommended speeds and feeds for the workpiece material before beginning the cut.