Kennametal 1799404 Threading Insert KC5025 16 Tpi Carbide

Product Description

The KENNAMETAL 1799404 is a carbide threading insert designed for internal thread-cutting operations on CNC lathes and turning centers. Part of the Kennametal Top Notch series, it features a TiAlN finish applied via PVD coating process, which provides wear resistance and thermal stability during high-speed threading. The insert is configured for left-hand cutting with a 60-degree included angle and a 16 TPI pitch, making it suitable for UN-standard internal threads. It carries material grade designations of C2 and C6. The corner radius measures 0.0031 inches (0.08 mm), and the tip-to-top height is 0.1480 inches (3.76 mm).

This insert is used in internal threading applications on ferrous and non-ferrous workpieces where UN thread standards apply. The left-hand orientation suits setups requiring reverse-thread cutting or specific spindle configurations. It fits within the Top Notch insert system, which is commonly found in production turning environments including aerospace, automotive, and general machining shops. The insert size 3 designation corresponds to the Top Notch toolholder pocket specification. Minimum order quantity is 5 units; package quantity is 1.

Key Features

• TiAlN PVD coating for extended tool life and heat resistance during internal threading
• Left-hand cutting configuration for reverse-thread or specific lathe setups
• 16 TPI pitch with 60-degree included angle for UN internal thread standards
• Corner radius of 0.0031 inches (0.08 mm) for precise thread form accuracy
• KC5025 grade carbide substrate balances toughness and wear resistance
• Top Notch series insert size 3 for use with compatible Top Notch toolholders

Compatibility

Designed for use with Kennametal Top Notch series toolholders that accept size 3 NTC-style inserts. Consult toolholder documentation to confirm pocket geometry and clamping compatibility before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Power down and lock out the machine before seating or removing the insert. Use the appropriate Top Notch clamping screw and driver to secure the insert without over-torquing the clamping mechanism. Inspect the insert pocket for chips or debris before seating to ensure proper insert orientation and contact.