Osg 86301709 Square End Mill 3/4 in 3 Flute Solid Carbide Dlc

Product Description

The OSG 86301709 is a solid carbide square end mill designed for precision milling operations in metalworking and machining environments. It features a 3/4 inch mill diameter, a 3 inch length of cut, and a 40-degree helix angle with a DLC (Diamond-Like Carbon) coating that reduces friction and extends tool life in demanding cutting applications. The micrograin carbide construction provides consistent edge integrity across the full length of cut. This is a single-end tool with right-hand cutting and right-hand flute direction. It is installed and operated by machinists and CNC programmers working in job shops, production machining, and toolroom environments.

This end mill is suited for milling ferrous and non-ferrous materials where a high-helix, coated carbide tool is specified. The 3-flute geometry balances chip evacuation and surface finish, making it appropriate for slotting, profiling, and peripheral milling operations. The 3/4 inch shank diameter matches the mill diameter, allowing direct clamping in standard ER collet chucks, end mill holders, or hydraulic toolholders without a reducer. It is a centercutting tool, allowing plunge entry where required by the operation.

Key Features

• 3/4 inch mill diameter with matching 3/4 inch shank diameter for direct toolholder fit
• 3 inch length of cut for deep slotting and profiling passes
• DLC coating reduces friction and improves wear resistance in high-speed applications
• 40-degree helix angle promotes smooth chip evacuation and stable cutting forces
• Micrograin solid carbide substrate for consistent edge sharpness and repeatability
• Centercutting geometry permits plunge milling without a pre-drilled entry hole

Compatibility

Designed as an OEM-style solid carbide square end mill suitable for use in CNC machining centers and manual knee mills equipped with standard 3/4 inch end mill holders or ER collet tooling systems.

Installation Notes

Installation is performed by a machinist or CNC setup technician. The machine spindle must be fully stopped and the tool path program verified before mounting. Seat the shank fully in the toolholder and torque the retention mechanism to the toolholder manufacturer's specification. Confirm runout at the tool tip with a dial indicator before beginning the cut, particularly given the 3 inch length of cut which amplifies any deflection at the holder interface.