Seco 03276701 WNMG332-M3 TP25 Carbide Turning Insert 3/8 Ic

Product Description

The SECO 03276701 is a WNMG332-M3 indexable turning insert in grade TP25, designed for general-purpose metal cutting in CNC lathes and turning centers. The insert is manufactured from solid carbide and features a multilayer CVD coating of TiCN and Al2O3 with a chromium outer layer, providing wear resistance and thermal stability during continuous and interrupted cuts. The 80-degree trigon (W) shape with a neutral hand orientation and a 0.0315-inch corner radius suits a broad range of roughing and semi-finishing operations. With 6 usable cutting edges per insert, it delivers a strong cost-per-edge value for high-volume production environments.

This insert is intended for turning, facing, and boring operations primarily on steel, with secondary suitability for stainless steel and cast iron. It is rated for material grades P20, P25, P30, and P35, making it a practical choice for carbon and alloy steel workpieces in both light and moderate stock-removal passes. The M3 chip breaker geometry is optimized for medium-depth cuts and helps manage chip flow in continuous turning. Machinists and CNC programmers working in job shops, production facilities, or tool-and-die operations will find this insert appropriate for everyday turning toolholders that accept WNMG-style inserts with clamp, pin, or lever-lock holding.

Key Features

• Multilayer CVD coating (TiCN plus Al2O3 plus Cr) improves flank wear resistance and crater resistance at elevated cutting speeds
• 6 cutting edges per insert reduce tooling cost in high-volume turning applications
• M3 chip breaker geometry supports medium-depth boring, facing, and turning passes
• Negative rake angle with chamfered and honed cutting edge provides edge strength for steel and cast iron
• Maximum depth of cut up to 0.2449 inches supports both semi-finish and moderate roughing passes
• Meets ANSI and ISO dimensional standards; ISO code WNMG060408-M3

Compatibility

Designed as a direct-fit replacement for WNMG332-M3 style indexable inserts used in standard WNMG toolholders with clamp, pin, or lever-lock clamping. Compatible with toolholders that accept a 3/8-inch inscribed circle, 3/16-inch thick trigon insert with a 0.150-inch hole diameter. Suitable for primary use on steel (P-class) and secondary use on stainless steel (M-class) and cast iron (K-class) workpieces.

Installation Notes

Installation is performed by a machinist or CNC toolroom technician. Always power down and lock out the machine before indexing or replacing inserts. Seat the insert fully against the toolholder pocket and verify the clamp, pin, or lever-lock mechanism is fully engaged before resuming cuts. Handle carbide inserts with care to avoid chipping the cutting edges during loading.