Osg 484-7874 Square End Mill 0.7874 in 4 Flute Carbide

Product Description

The OSG 484-7874 is a solid carbide square end mill designed for precision milling operations in metalworking and machining applications. It features a 0.7874 inch (20 mm) mill diameter with a 2.9921 inch (76 mm) length of cut, placing it in the extra-long cutting length category. The four-flute spiral configuration with a 30-degree helix angle supports efficient chip evacuation and smooth cutting performance. This is a center-cutting tool, allowing plunge entry into workpieces. It is intended for use by machinists and tool-and-die professionals operating CNC machining centers and manual mills.

This end mill is suited for slotting, profiling, and peripheral milling in a range of materials. The extra-long length of cut makes it appropriate for deep-cavity work and tall-workpiece applications where standard-length tools cannot reach. The right-hand cut and right-hand flute geometry follow conventional milling configurations. It ships as a single unit and is part of the OSG Series 484 lineup of solid carbide end mills.

Key Features

• 0.7874 inch (20 mm) mill diameter for precise material removal
• 2.9921 inch (76 mm) length of cut — extra-long category for deep cavity milling
• 4-flute spiral design with 30-degree helix angle for efficient chip flow
• Center-cutting geometry allows direct plunge entry
• Right-hand cut, right-hand flute — standard CNC-compatible orientation
• Solid carbide construction for rigidity and wear resistance
• Uncoated finish; Series 484

Compatibility

Designed as a direct-fit solid carbide square end mill for CNC machining centers and manual milling machines accepting a 20 mm (0.7874 inch) shank diameter. Part of the OSG Series 484 product line.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer guidelines for tool holding and runout tolerances. Ensure the spindle and tool holder are clean and free of debris before seating the shank. Confirm proper clamping torque on the collet or end mill holder per the holder manufacturer specification before engaging the spindle. Extra-long end mills are more susceptible to deflection — verify feed and speed parameters for the specific workpiece material before running at full depth.