Iscar 6403480 Threading Insert IC908 Carbide Internal

Product Description

The ISCAR 6403480 is a carbide threading insert designed for internal thread cutting applications. It carries the TIPI5.4MT0.20 form designation and is manufactured in ISCAR grade IC908, a PVD-coated carbide grade engineered for consistent performance in threading operations. The insert produces a partial profile 60-degree thread form and features the MT chipbreaker geometry, which is suited for controlled chip evacuation during internal threading. The cutting tip width measures 5.41 mm (0.2130 inches) with a corner radius of 0.20 mm (0.0080 inches). This insert belongs to ISCAR Cut Grip series tooling and is installed by machinists and CNC tooling technicians on threading toolholders configured for internal bore work.

This insert is used in internal threading operations on CNC lathes and turning centers where a 60-degree partial profile thread form is required. The partial profile configuration allows the insert to cut a range of thread pitches within the compatible pitch range rather than a single fixed pitch, making it adaptable across multiple jobs. It is suited for production threading in ferrous and non-ferrous materials where PVD coating provides wear resistance and edge integrity. The 8 TPI (3.91 mm pitch) internal pitch rating defines the pitch range this insert is optimized to handle. Typical applications include threading bores in components for industrial, hydraulic, and mechanical assemblies.

Key Features

• IC908 PVD-coated carbide grade for wear resistance in internal threading
• Partial profile 60-degree included angle compatible with multiple thread pitches
• MT chipbreaker geometry for controlled chip flow in internal bore applications
• Cutting tip width of 5.41 mm (0.2130 inches) with 0.20 mm corner radius
• Conforms to ISO 13399 insert identification standards
• Cut Grip series toolholder compatibility for secure, repeatable seating

Compatibility

Designed as an OEM-style replacement threading insert for ISCAR Cut Grip series internal threading toolholders configured for TIPI-style inserts with a 60-degree partial profile geometry.

Installation Notes

This insert is installed by qualified machinists or CNC tooling technicians. Power down and lock out the machine before changing inserts. Seat the insert fully in the toolholder pocket and verify clamp torque per the toolholder manufacturer specification before resuming cutting. Inspect the insert edge and corner radius condition regularly; a worn or chipped edge will degrade thread form accuracy and surface finish.