Kennametal 3556331 Milling Insert HNGJ0905ANSNHD KC725M

Product Description

The KENNAMETAL 3556331 is a solid carbide milling insert in the HNGJ series, designed for high-performance milling of steel, stainless steel, superalloys, and titanium. Identified by ISO code HNGJ0905ANSNHD and ANSI code HNGJ535ANSNHD, this double-sided hexagon insert delivers 12 usable cutting edges per insert, maximizing tool life and reducing per-edge cost. The TiAlN PVD coating provides thermal resistance and wear protection suited to demanding cutting conditions. With a negative rake angle of 15 degrees and a chamfered and honed cutting edge style, the insert maintains edge integrity under interrupted cuts and high-feed passes. The HD chip breaker geometry promotes controlled chip evacuation in medium to heavy milling applications.

This insert is intended for use in Kennametal Dodeka cutter series toolholders. It suits milling operations in aerospace, energy, and general machining environments where the workpiece material is steel, stainless steel, or difficult-to-machine superalloys and titanium alloys. The neutral hand orientation allows use in both conventional and climb milling setups. The screw-holding method provides positive insert location and simplifies indexing during production runs. Typical installations include face milling, shoulder milling, and profile milling on CNC machining centers and horizontal mills.

Key Features

• 12 cutting edges per double-sided hexagon insert for low cost per edge
• TiAlN PVD coating for high-temperature wear resistance on steel and superalloys
• HD chip breaker geometry for controlled chip formation in medium to heavy cuts
• Negative rake with chamfered and honed edge for edge strength under load
• Compatible with Kennametal Dodeka cutter series via screw-clamp holding
• Neutral hand design suits both climb and conventional milling orientations

Compatibility

Designed for use in the Kennametal Dodeka cutter series. Conforms to ANSI and ISO insert standards. Material grade classifications C5, C6, and C7 apply. Primary workpiece materials are steel (P), stainless steel (M), superalloys, and titanium (S).

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate Torx or hex key for the insert clamping screw as specified in the Dodeka cutter toolholder documentation. Inspect the insert pocket seat and screw threads for debris or damage before seating a new insert to ensure proper location and clamping force.