Iscar 6403284 Threading Insert Tip 2P18-UN IC908 18 Tpi

Product Description

The ISCAR 6403284 is a carbide threading insert designed for external UN thread forms. Built to the TIP insert style and manufactured in IC908 grade submicron carbide with a PVD coating, this insert is engineered for precise thread cutting on external workpiece profiles. It carries an 18 TPI pitch and a 60-degree included angle, making it suited for standard UN unified thread applications. The IC908 grade delivers wear resistance and edge stability in demanding threading operations. This insert is part of the ISCAR Cut-Grip and IscarThread series and follows the ISO 13399 standard for tool data representation. Machinists and CNC operators working in job shop, production, or maintenance environments are the primary installers.

This insert is used in external threading operations on CNC lathes and turning centers. It is appropriate for cutting UN-standard threads at 18 TPI on ferrous and non-ferrous materials where a neutral-hand TIP-style insert is required. The PVD-coated IC908 submicron carbide grade is suited for medium to high cutting speeds where edge toughness and surface finish consistency matter. It fits toolholders designed to accept the 2P18 insert size within the Cut-Grip and IscarThread series platform.

Key Features

• IC908 submicron carbide grade with PVD coating for wear resistance and thermal stability
• 18 TPI external pitch for UN unified thread standard applications
• 60-degree included angle matches standard UN thread form geometry
• Neutral hand orientation for flexible toolholder compatibility
• ISO 13399 compliant tool data for use with CAM and tool management systems
• Corner radius of 0.0070 inches (0.18 mm) for controlled thread root finishing

Compatibility

Designed for use with Cut-Grip and IscarThread series toolholders accepting the 2P18 insert size. Verify holder specification and clamping pocket before installation.

Installation Notes

This insert is installed and replaced by machinists or CNC tooling technicians. Power down and lock out the machine spindle before seating or removing inserts. Use the appropriate torx or clamping screw driver specified by the toolholder manufacturer to secure the insert — do not overtighten by hand estimation. Confirm insert seating and runout before initiating a threading pass.