Iscar 6403280 Threading Insert Tip 2P12-UN IC908 Carbide

Product Description

The ISCAR 6403280 is a carbide threading insert designed for external UN-thread cutting operations on CNC lathes and turning centers. Manufactured to the TIP 2P12-UN geometry and carrying the IC908 grade designation, this insert uses a submicron carbide substrate with a PVD coating for improved edge toughness and wear resistance at moderate to high cutting speeds. The neutral hand orientation makes it compatible with standard toolholders in the Cut-Grip and IscarThread series. It is sized at 2P12 with a thickness of 0.094 inches and a corner radius of 0.011 inches, making it suited for precision thread-form accuracy on steel and similar workpiece materials.

This insert is intended for external threading applications where UN thread standards are required. It fits into CNC turning and thread-whirling setups common in production machining environments, job shops, and maintenance repair operations. The IC908 grade is positioned for interrupted cuts and applications demanding consistent tool life across multiple thread passes. Licensed machinists and CNC operators working in metalworking trades are the primary installers and users of this insert.

Key Features

• IC908 grade submicron carbide substrate with PVD coating for edge toughness and extended tool life
• TIP 2P12-UN geometry with 60-degree included angle for standard UN external thread forms
• Neutral hand orientation for use in standard Cut-Grip and IscarThread series toolholders
• Corner radius of 0.011 inches (0.28 mm) for precise thread-root geometry
• Insert thickness of 0.094 inches (2.39 mm) for stable seating in compatible pockets
• Compliant with ISO 13399 insert identification standards

Compatibility

Designed for use in ISCAR Cut-Grip and IscarThread series toolholders accepting the 2P12 insert size with UN external threading geometry.

Installation Notes

Threading inserts of this type are installed and changed by qualified CNC machinists or tool-room technicians. Ensure the machine spindle is fully stopped and the toolholder pocket is clean and free of chips before seating the insert. Use the appropriate ISCAR torx or clamping key to secure the insert without over-torquing the clamping screw. Inspect the insert seating surface for wear or debris that could affect thread-form accuracy before beginning a threading cycle.