Seco 03083970 Square End Mill 12mm 4-flute Solid Carbide

Product Description

The SECO 03083970 is a single-end square end mill engineered for high-performance metal removal in demanding machining environments. Built from micrograin solid carbide, it measures 12 mm in diameter with a 36 mm length of cut and an 84 mm overall length. The four-flute, right-hand helical design incorporates a variable helix angle to reduce chatter and improve surface finish at aggressive feed rates. An AlTiN coating provides thermal resistance and extended tool life when cutting hard materials. This end mill is center-cutting and features a straight cylindrical shank at 12 mm diameter for secure toolholder engagement. It is sized for use in CNC machining centers and manual mills handled by skilled machinists and toolroom operators.

This end mill is suited for milling hard materials and stainless steel, including grades classified under material codes H, M, and S. Its long-length configuration makes it appropriate for deep-pocket milling, slotting, and profiling operations where standard-reach tools cannot reach the required depth. The variable helix geometry helps manage harmonics during extended-reach cuts, making it a practical choice in both production and jobshop settings.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance in hard and stainless workpiece materials
• AlTiN coating for high-temperature performance and extended tool life
• Variable helix design reduces vibration and chatter during cutting
• 4-flute, right-hand helical geometry supports efficient chip evacuation
• Center-cutting capable — suitable for plunge and ramp entry
• Straight cylindrical shank at 12 mm for compatibility with standard collet and toolholder systems
• Long length-of-cut configuration at 36 mm for deep-pocket and profiling applications

Compatibility

Part of the SECO STR440M.2 series. Designed for use in CNC machining centers and milling machines accepting a 12 mm straight cylindrical shank, targeting hard material and stainless steel workpiece applications per material codes H, M, and S.

Installation Notes

Installation and tool changes should be performed by qualified machinists with the spindle fully powered down and the machine in a safe, locked-out state. Ensure the toolholder bore and collet are clean and free of chips before seating the shank to maintain runout within specification. Maximum TIR is 0.0005 inches — verify runout with a dial indicator after clamping. Follow the tool manufacturer's recommended speeds and feeds for the specific workpiece material and depth of cut.