Seco 03093862 DNMG432-M3 TP3501 Turning Insert Carbide

Product Description

The SECO 03093862 is a DNMG432-M3 indexable turning insert manufactured from solid carbide with a CVD-applied Duratomic multilayer coating of TiCN, Al2O3, and Cr. It carries manufacturer grade TP3501 and is designed for medium to roughing turning operations on steel and stainless steel. The insert features a 55-degree diamond shape with a negative rake angle, four cutting edges, and a chamfered and honed cutting edge style. With a 0.5 inch inscribed circle and a 0.0315 inch corner radius, it delivers consistent chip control through the M3 chip breaker geometry. Licensed HVAC techs or machinists performing CNC or manual lathe work on steel components will find this a reliable production insert.

This insert is suited for back turning, boring, facing, and general turning applications on steel workpieces in both production and job-shop environments. It targets material grades P20, P30, and P40 steel as its primary workpiece material, with stainless steel as secondary. It fits toolholders designed to the DNMG industry standard and is compatible with clamp, pin, and lever lock holding methods. The ISO equivalent designation is DNMG150408-M3, and it conforms to both ANSI and ISO standards.

Key Features

• CVD Duratomic multilayer coating (TiCN, Al2O3, Cr) for extended tool life in steel turning
• 55-degree diamond insert shape with negative rake for strong cutting edge stability
• M3 chip breaker geometry suits medium-depth to roughing cuts
• Four usable cutting edges per insert for cost-effective indexing
• Chamfered and honed edge prep reduces notch wear and edge chipping
• Compatible with clamp, pin, and lever lock toolholder systems

Compatibility

Designed for use in DNMG-style indexable toolholders that accept a 0.5 inch inscribed circle, 55-degree diamond insert per ANSI and ISO standards. Industry standard number DNMG432-M3; ISO code DNMG150408-M3. Compatible with clamp, pin, and lever lock holding methods.

Installation Notes

Installation is performed by qualified machinists or tool-room technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Seat the insert fully against the toolholder pocket and verify the clamping mechanism is secure before resuming cuts. Follow the toolholder manufacturer torque guidelines for the specific clamp screw to avoid insert fracture or seat damage.