Seco 03276273 Turning Insert DNMG432-M3 TM2501 Carbide

Product Description

The SECO 03276273 is a DNMG432-M3 indexable turning insert engineered for demanding metal-cutting applications in CNC lathes and turning centers. Built from solid carbide and coated with a CVD-applied Duratomic TiCN and Al2O3 multilayer coating, this insert delivers wear resistance and thermal stability when cutting stainless steel and steel. The 55-degree diamond shape (DNMG insert style) provides four usable cutting edges per insert, reducing cost-per-edge in production environments. The M3 chip breaker geometry is designed for medium to semi-finishing passes where controlled chip formation is critical.

This insert is suited for ISO material groups M (stainless steel) and P (steel) in operations including turning, facing, boring, and back turning. The negative rake and chamfered-and-honed cutting edge style make it appropriate for both interrupted and continuous cuts in medium-duty machining. It is installed by licensed machinists and CNC tooling technicians in job shops, production facilities, and maintenance machining environments where consistent surface finish and tool life are priorities.

Key Features

• CVD Duratomic TiCN, Al2O3, and Cr multilayer coating for enhanced wear resistance and heat resistance
• Four cutting edges per insert for reduced tooling cost per edge
• M3 chip breaker geometry optimized for medium turning and facing on stainless steel and steel
• Compatible with clamp, pin, and lever-lock insert holding methods
• Chamfered and honed cutting edge for edge stability during interrupted cuts
• Conforms to ANSI and ISO standards; ISO code DNMG150408-M3

Compatibility

Designed as an OEM-style indexable replacement for toolholders and boring bars accepting DNMG-style inserts with clamp, pin, or lever-lock holding systems. Industry standard number DNMG432-M3; ISO code DNMG150408-M3. Minimum order quantity is 10 inserts; package quantity is 1.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before seating or indexing the insert. Use the correct torque wrench and seating hardware specified by the toolholder manufacturer — do not overtighten clamping screws by hand. Inspect the insert pocket for chips or debris before each insert change to ensure proper seating and edge accuracy.