Tungaloy 6803408 DNMG432SA AH120 Turning Insert

Product Description

The TUNGALOY 6803408 is a solid carbide turning insert in the DNMG-SA series, designated by ISO code DNMG432SA and manufacturer grade AH120. It features a PVD-applied TiAlN coating over a carbide substrate, delivering heat and wear resistance suited to interrupted and continuous cuts. The insert has a 55-degree diamond shape, a 0.5 inch inscribed circle, a 0.0315 inch corner radius, and a thickness of 0.1875 inches. With four cutting edges and a neutral hand orientation, it is designed for use by machinists and CNC turning specialists working in production and job-shop environments.

This insert is intended for turning, facing, boring, back turning, and back boring operations. It is rated for use on a broad range of workpiece materials including steel, stainless steel, cast iron, superalloys, titanium, and hard materials, corresponding to ISO material codes P, M, K, S, and H. Material grade designations include P15, P25, M15, M25, K15, K30, S10, and S25, making it applicable across light to moderate roughing and semi-finishing passes. The SA chip breaker geometry is engineered to manage chip flow in these varied cutting conditions.

Key Features

• PVD TiAlN coating on carbide substrate for thermal resistance and extended tool life
• 55-degree diamond insert shape (DNMG style) with neutral hand for versatile setups
• Four usable cutting edges, reducing per-edge tooling cost
• SA chip breaker geometry compatible with turning, facing, boring, back turning, and back boring
• Honed cutting edge style for edge stability on steel, stainless, cast iron, superalloys, titanium, and hard materials
• Conforms to ANSI and ISO standards; insert holding via clamp and pin

Compatibility

Designed as an OEM-style replacement or direct-fit insert for DNMG-style toolholders accepting a 432-size, 55-degree diamond insert with clamp and pin holding. Confirm toolholder pocket specifications against the 0.5 inch inscribed circle and 0.1875 inch insert thickness before installation.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate torque wrench and seating tool as specified by the toolholder manufacturer - do not overtighten the clamp screw. Inspect the pocket seat and clamp for wear or debris before seating a new insert edge.