Osg 445-1181 Square End Mill 0.1181 in 3 Flute Carbide

Product Description

The OSG 445-1181 is a solid carbide square end mill designed for precision milling in metalworking and machining applications. With a 0.1181 inch (3.00 mm) mill diameter and a 0.3937 inch (10.00 mm) length of cut, this tool suits fine detail work and small-bore milling tasks. It features three flutes with a 45-degree helix angle and a spiral flute geometry that promotes chip evacuation and cutting efficiency. Manufactured from micrograin solid carbide, the 445-1181 delivers rigidity and wear resistance in demanding cuts. The tool arrives uncoated and is center-cutting capable, allowing direct plunge entry into the workpiece.

This end mill is suited for milling operations in ferrous and non-ferrous metals, plastics, and composites where tight tolerances and small-diameter toolpaths are required. The regular length profile and 0.1181 inch shank diameter make it a practical fit for standard collet chucks and toolholders on CNC machining centers, manual mills, and multi-axis platforms. It is appropriate for finish passes, slot milling, and profiling in precision manufacturing environments.

Key Features

• 0.1181 inch (3.00 mm) mill diameter for fine detail and small-feature milling
• Three-flute design with 45-degree helix angle for efficient chip removal
• Center-cutting geometry allows direct plunge entry
• Micrograin solid carbide construction for rigidity and wear resistance
• Right-hand cut and right-hand spiral flute configuration
• Uncoated finish; regular length profile suitable for standard toolholders

Compatibility

Designed as an OEM-style replacement and standard tooling option for small-diameter milling applications; compatible with collet chucks and toolholders accepting a 0.1181 inch (3.00 mm) shank diameter.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Ensure the machine spindle is fully powered down and locked out before changing tooling. Seat the shank fully and evenly in the collet or toolholder and torque the retention hardware according to the toolholder manufacturer specifications. Inspect the cutting edges for chips or damage before each use, as micrograin carbide is brittle and sensitive to improper handling.