Osg 8557340 Square End Mill 3mm 3 Flute Dlc Carbide

Product Description

The OSG 8557340 is a solid carbide square end mill designed for precision milling operations in metalworking and machining applications. With a 3 mm cutting diameter and a 9 mm length of cut, this tool removes material in a controlled, repeatable path across a range of workpiece materials. The micrograin carbide substrate supports edge retention under demanding cutting conditions, while the DLC (Diamond-Like Carbon) coating reduces friction and heat buildup at the cutting edge. Three right-hand flutes with a 40-degree helix angle provide efficient chip evacuation and smooth surface finishes. This end mill is a single-end tool with a 6 mm shank diameter and a 55 mm overall length.

This end mill is suited for small-diameter milling work on machining centers and CNC mills in job shop, production, and tool-and-die environments. Its compact 3 mm cutting diameter makes it well-suited for slotting, profiling, and pocket milling in tight geometries or on small workpiece features. The centercutting geometry allows plunge entry where required. It is typically installed and operated by machinists and CNC operators working in precision metalworking settings.

Key Features

• 3 mm cutting diameter with 9 mm length of cut for small-feature milling
• DLC coating reduces friction and extends tool life in demanding cuts
• Micrograin solid carbide substrate for edge sharpness and wear resistance
• 40-degree right-hand helix for efficient chip evacuation
• Centercutting design allows direct plunge entry into workpiece material
• 6 mm shank diameter and 55 mm overall length for standard collet compatibility

Compatibility

Designed as an OEM-style replacement end mill compatible with standard collet toolholders and CNC milling machines accepting a 6 mm shank diameter.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. 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 mechanism to the toolholder manufacturer's specification. Verify tool runout with a dial indicator before beginning a cut to avoid premature edge wear or tool breakage.