Kennametal 1799471 Threading Insert NA6L3 KC5025 Carbide

Product Description

The KENNAMETAL 1799471 is a carbide threading insert designed for precision thread-cutting operations on both internal and external Acme threads. Manufactured in the NA6L3 style with a KC5025 grade and PVD-applied TiAlN finish, this insert delivers wear resistance and edge stability in demanding threading applications. It is configured for left-hand thread cutting at 3 threads per inch (TPI) with a 29-degree included angle, making it suitable for Acme-standard thread profiles. The Top Notch series indexable design allows quick, repeatable insert changes. Licensed machinists and CNC turning specialists are the primary installers of this insert.

This insert is applied in CNC lathes and manual turning centers where Acme thread forms are required on both internal bores and external diameters. The left-hand orientation and 3 TPI pitch are common requirements in lead screw, power transmission, and linear actuator component manufacturing. It fits applications across C2 and C6 material grades, spanning a broad range of steels and cast irons. The Top Notch series toolholder system is the intended mounting platform for this insert style and size 6 geometry.

Key Features

• KC5025 carbide grade with PVD TiAlN finish for elevated wear and thermal resistance
• Left-hand Acme thread profile at 3 TPI with a 29-degree included angle
• Rated for both internal and external thread cutting in a single insert
• Top Notch series indexable platform for fast, repeatable insert indexing
• Corner radius of 0.1180 inches for consistent thread root geometry
• Insert size 6 with a cutting tip width of 0.1185 inches

Compatibility

Designed for use with Kennametal Top Notch series toolholders accepting size 6 inserts. Fits internal and external Acme thread applications at 3 TPI in left-hand configurations.

Installation Notes

Installation and indexing should be performed by a qualified machinist with the machine spindle fully stopped and all power isolated. Use the appropriate Top Notch series toolholder and torque the clamping screw according to the toolholder manufacturer specifications. Inspect the insert pocket and clamping surfaces for chips or debris before seating the insert. Do not exceed the rated depth of cut or feed rate for the KC5025 grade as specified in the Kennametal cutting data reference.