Description
The SECO 02959926 is a WNMG330.5-M3 trigon turning insert designed for general-purpose metal cutting on CNC lathes and turning centers. Manufactured from solid carbide with a CVD-applied Duratomic multilayer coating consisting of TiCN, Al2O3, and Cr, this insert delivers wear resistance and thermal stability across a broad range of cutting conditions. It carries an 80-degree included angle, a neutral hand orientation, and an M3 chip breaker geometry optimized for medium-duty interrupted and continuous cuts. The inscribed circle measures 0.375 inches, insert thickness is 0.1874 inches, and corner radius is 0.0079 inches. With six cutting edges per insert, it offers extended tool life per unit. Grade TP2501 targets steel as the primary workpiece material and is rated across material grades P10 through P35.
This insert is suited for boring, facing, and turning operations on steel, stainless steel, and cast iron workpieces in both roughing and finishing passes within the P10-P35 material grade range. The M3 chip breaker geometry handles moderate feeds and depths of cut up to 0.252 inches, making it appropriate for production turning in job shops, aerospace component machining, and general metalworking environments. It conforms to both ANSI and ISO standards, with an ISO code of WNMG060402-M3 and an industry standard designation of WNMG330.5-M3. The insert is held by clamp, pin, or lever lock toolholders that accept the WNMG style seat. Package quantity is 1 insert; minimum order quantity is 10 inserts.
Key Features
- CVD Duratomic multilayer coating (TiCN, Al2O3, Cr) for high wear and heat resistance
- Six cutting edges per insert maximizes cost-per-edge value in production environments
- M3 chip breaker geometry supports boring, facing, and turning with controlled chip evacuation
- Chamfered and honed cutting edge style balances edge strength and surface finish quality
- Negative rake, 0-degree relief angle (Clearance Code N) for rigid, stable cutting action
- Meets ANSI and ISO standards; dual-designated WNMG330.5-M3 and WNMG060402-M3
Compatibility
Compatible with WNMG-style toolholders that accept clamp, pin, or lever lock insert retention. Fits seats with a 0.375-inch inscribed circle and a 0.1874-inch insert thickness. Designed for use on steel (P10-P35), stainless steel (M grade), and cast iron (K grade) workpieces.
Installation Notes
Installation is performed by qualified machinists or tooling technicians following standard insert indexing procedures. Ensure the machine spindle is stopped and the toolholder is secured in the turret before seating or removing the insert. Inspect the insert pocket and seating surface for chips or debris before clamping. Do not exceed the maximum depth of cut of 0.252 inches specified for this insert geometry.
Technical Specifications
- Insert Style: WNMG
- Series: WNMG-M3
- Manufacturer Grade: TP2501
- Material Grade: P10, P20, P30, P35
- Insert Material: Carbide
- Coating: TiCN, Al2O3, Cr (Duratomic CVD)
- Chip Breaker: M3
- Insert Shape: Trigon (80-degree included angle)
- Insert Hand: Neutral
- Rake: Negative
- Clearance Code: N (0-degree relief angle)
- Tolerance Code: M
- Cutting Edge Style: Chamfered and Honed
- Inscribed Circle: 3/8 inches (0.3750 inches)
- Insert Thickness: 3/16 inches (0.1874 inches)
- Insert Length: 0.5118 inches
- Corner Radius: 1/128 inches (0.0079 inches)
- Hole Diameter: 0.1500 inches
- Maximum Depth of Cut: 0.252 inches
- Number of Cutting Edges: 6
- Insert Holding Method: Clamp, Pin, Lever Lock
- Primary Workpiece Material: Steel (P)
- Secondary Workpiece Material: Stainless Steel (M), Cast Iron (K)
- Multi-Use Application: Boring, Facing, Turning
- ISO Code: WNMG060402-M3
- Standards: ANSI, ISO
- Package Quantity: 1 insert
- Minimum Order Quantity: 10 inserts
- Weight: 0.01 pounds
Standard Information
- Brand: SECO
- Manufacturer Part Number: 02959926
