Seco 02959833 Turning Insert TNMG331-MF2 TP2501 Carbide

Product Description

The SECO 02959833 is a TNMG331-MF2 style indexable turning insert in grade TP2501, designed for precision metal cutting in CNC turning applications. The insert features a triangular shape with a 60-degree included angle, a 3/8 inch inscribed circle, and a 1/64 inch corner radius. The substrate is solid carbide with a CVD-applied Duratomic multilayer coating — TiCN, Al2O3, and Cr — engineered for thermal and wear resistance. With 6 cutting edges and a neutral hand orientation, this insert delivers consistent performance across back turning, boring, facing, and turning operations.

This insert is intended for use by machinists and CNC operators working primarily on steel (ISO P category) and secondarily on stainless steel and cast iron (ISO M and K categories). The MF2 chip breaker geometry is suited for medium finishing and light roughing passes. The chamfered and honed cutting edge style helps control chip formation and reduces edge microchipping during interrupted or continuous cuts. It is compatible with TNMG-style toolholders that use clamp, pin, or lever lock holding methods.

Key Features

• Duratomic CVD coating (TiCN / Al2O3 / Cr) for extended tool life on steel and stainless
• MF2 chip breaker geometry optimized for medium finishing passes
• 6 cutting edges per insert — neutral hand, multi-use indexable design
• Chamfered and honed cutting edge reduces microchipping and promotes edge stability
• Accepts clamp, pin, and lever lock toolholder holding methods
• Conforms to ANSI and ISO standards; ISO code TNMG160404-MF2

Compatibility

Designed for use in TNMG-style toolholders accepting a 3/8 inch inscribed circle triangular insert with a 0.150 inch hole diameter. Compatible with clamp, pin, and lever lock holding systems. Primary workpiece material is steel (P10, P20, P30, P35); secondary materials include stainless steel and cast iron.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate torque wrench or key specified by the toolholder manufacturer when securing the clamping screw — do not overtighten. Inspect the toolholder seat and shim for wear or debris before seating a new insert to ensure proper contact and prevent premature edge failure.