Kennametal 1796088 Threading Insert NT4R KC5025 Carbide

Product Description

The KENNAMETAL 1796088 is a carbide threading insert designed for both internal and external thread cutting operations. Featuring the KC5025 grade with a PVD-applied TiAlN finish, it delivers wear resistance suited to high-speed threading in ferrous and non-ferrous materials. The insert covers a partial profile 60-degree thread standard, supporting external pitch ranges of 1.25 to 6.25 mm (4 to 20 TPI) and internal pitch ranges of 2.00 to 6.25 mm (4 to 12 TPI). It belongs to the Kennametal Top Notch series and is sized as an Insert Size 4. Machinists and CNC tool-room technicians use this insert for precision thread-form applications where consistent tip geometry and coating durability are required.

This insert is suited for threading operations on CNC lathes and manual turning centers in job-shop, production, and maintenance environments. Its right-hand configuration and 60-degree included angle make it a standard choice for unified and metric thread profiles on external and internal features. The Top Notch series toolholder system is required for proper seating and indexing of this insert.

Key Features

• KC5025 carbide grade with PVD TiAlN coating for extended wear life in threading applications
• Covers external pitch 1.25 to 6.25 mm (4 to 20 TPI) and internal pitch 2.00 to 6.25 mm (4 to 12 TPI)
• Partial profile 60-degree thread standard supports both unified and metric thread forms
• Right-hand cut orientation for standard lathe threading setups
• Insert Size 4 within the Kennametal Top Notch series for secure, repeatable indexing
• Corner radius of 0.17 mm (0.0067 inches) for controlled thread root geometry

Compatibility

Designed for use with Kennametal Top Notch series threading toolholders that accept Insert Size 4, NT-style inserts.

Installation Notes

Installation should be performed by a qualified machinist or CNC toolroom technician. Ensure the machine spindle is fully stopped and locked out before indexing or replacing the insert. Seat the insert fully in the Top Notch toolholder pocket and verify the clamping mechanism is secure before resuming cutting. Do not exceed the recommended feed and speed parameters for the KC5025 grade as published in the applicable Kennametal tooling documentation.