Kennametal 1796139 Threading Insert NTF2L KC5010 Carbide

Product Description

The KENNAMETAL 1796139 is a carbide threading insert designed for both internal and external thread cutting operations. Coated with TiAlN via a PVD process, it delivers heat resistance and wear performance suited to demanding threading applications. The insert follows a partial profile 60-degree thread standard and is manufactured in the KC5010 grade, placing it in the C3 and C4 material grade categories. Left-hand orientation makes it purpose-built for left-hand thread work. It belongs to the Top Notch series and carries an insert size designation of 2. Licensed machinists and CNC operators working in production and maintenance environments are the primary users of this insert.

This insert is applied in both internal and external threading scenarios. External pitch range is 0.60 to 1.75 mm, covering 14 to 44 TPI. Internal pitch range runs 1.00 to 2.00 mm, covering 12 to 24 TPI. The 60-degree included angle suits unified and metric thread forms at those pitch ranges. It is commonly used on CNC lathes and manual turning centers where the Top Notch toolholder system is already in service. Applications span general metalworking, maintenance machining, and production threading of ferrous and non-ferrous workpieces.

Key Features

• TiAlN finish applied via PVD coating for elevated heat resistance and extended tool life
• KC5010 carbide grade rated for C3 and C4 material classifications
• Partial profile 60-degree thread standard covers both internal and external applications
• Left-hand insert orientation for left-hand thread cutting operations
• External pitch range 0.60 to 1.75 mm (14 to 44 TPI) and internal pitch range 1.00 to 2.00 mm (12 to 24 TPI)
• Top Notch series insert for use with compatible Top Notch toolholders

Compatibility

Designed for use with Top Notch series toolholders that accept insert size 2 threading inserts. Compatible with both internal and external threading applications using a partial profile 60-degree thread form.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. The machine spindle must be stopped and all motion locked out before seating or removing the insert. Use the appropriate Top Notch clamping screw and torx key as specified by the toolholder manufacturer. Inspect the insert pocket and seating surface for chips or debris before installation to ensure proper insert support and thread accuracy.