Walter 5354463 Turning Insert CNMG431-NM4WSM30 Carbide

Product Description

The WALTER 5354463 is a solid carbide turning insert carrying the industry standard designation CNMG431-NM4WSM30. It features an 80-degree diamond (rhombic) shape with a neutral hand orientation and a negative rake and relief angle geometry. The inscribed circle measures 0.5 inches, the corner radius is 0.0157 inches (1/64 inch), and the insert thickness is 0.1875 inches (3/16 inch). The WSM30 grade substrate is finished with a multilayer PVD coating - TiAlN, Al2O3, and ZrCN - engineered for wear resistance and thermal stability in demanding cutting operations. Licensed HVAC techs and machinists in precision metalworking rely on this insert for roughing and medium machining applications.

This insert is designed primarily for turning, facing, and boring of stainless steel and superalloys and titanium (ISO material codes M and S). It also performs in steel applications (ISO code P), making it a versatile choice for shops working across multiple workpiece materials. The NM4 chip breaker geometry is optimized for roughing and medium machining passes, and the four available cutting edges allow rotation to extend tooling life before replacement. The insert is held in place using a clamp or pin method and fits standard CNMG-style toolholders.

Key Features

• Multilayer PVD coating (TiAlN, Al2O3, ZrCN) for thermal and wear resistance in stainless steel and superalloy cuts
• NM4 chip breaker geometry suited for roughing and medium machining operations
• Four cutting edges per insert for extended tooling economy
• 80-degree diamond insert shape provides a strong cutting edge with a 20-degree rake angle
• Honed cutting edge style reduces chipping risk at entry and exit of cut
• Compatible with both clamp and pin holding methods in standard CNMG toolholders
• Dual standards compliance: ANSI (CNMG431) and ISO (CNMG120404)

Compatibility

Designed for use in standard CNMG-style toolholders accepting a 0.5-inch inscribed circle insert. Fits toolholders configured for clamp or pin retention. Suitable for turning, facing, and boring operations on stainless steel, superalloys, titanium, and steel workpieces.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and locked out before seating or rotating the insert. Verify the toolholder pocket and seating surface are clean and free of chips before clamping. Follow the toolholder manufacturer torque guidance for the clamp screw to avoid insert rocking or premature edge failure.