Iscar 6405443 Threading Insert 28-83 Tpi IC1008 Carbide

Product Description

The ISCAR 6405443 is a carbide threading insert designed for external thread-cutting operations on CNC lathes and Swiss-type screw machines. Part of the IscarThread Swisscut series, it carries a PVD-applied coating with the IC1008 manufacturer grade, optimized for consistent performance on steels and nonferrous alloys in material grades C1 through C3 and C5 through C6. The insert follows a partial profile 60-degree thread standard and covers an external pitch range of 0.30 to 0.90 mm, equivalent to 28 to 83 TPI, making it suitable for fine-pitch threading work common in precision and medical-component machining. The SCI insert style is right-hand cut.

This insert is used in high-precision external threading applications, typically on Swiss-type sliding-headstock lathes and compact CNC turning centers where tight tolerances and small-diameter workpieces are the norm. The Swisscut series designation indicates suitability for the close-clearance toolholders found on Swiss-type machines. It is installed and managed by machinists and CNC tooling specialists working in job shops, medical-device manufacturing, and precision parts production environments.

Key Features

• PVD-coated IC1008 carbide grade for wear resistance on steels and nonferrous materials
• Partial profile 60-degree thread form covers 0.30 to 0.90 mm pitch and 28 to 83 TPI range
• Right-hand cut, external thread application
• MT chipbreaker geometry for controlled chip evacuation in fine-pitch threading
• Insert size 22 with a cutting tip width of 0.51 mm (0.0200 inches) and corner radius of 0.03 mm (0.0010 inches)
• Conforms to ISO 13399 tooling data standards for CAM and tool management integration

Compatibility

Designed for use with IscarThread Swisscut series toolholders accepting SCI-style inserts with insert size 22. Consult the ISCAR toolholder selection guide to confirm seat geometry and clamping compatibility before installation.

Installation Notes

Threading inserts of this type are installed and indexed by qualified machinists; confirm the machine spindle and coolant supply are fully stopped before changing inserts. Use the correct torx or hex key specified for the clamping screw torque on the holder body — refer to the toolholder documentation for fastener requirements. Inspect the insert seat for chips or debris before seating the new insert to ensure proper contact and prevent premature edge failure. Minimum order quantity for this insert is 5 pieces.