Kennametal 1764576 Threading Insert NTP3L KC5025 Tialn

Product Description

The KENNAMETAL 1764576 is a carbide threading insert in the Top Notch series, designed for both internal and external thread cutting on CNC lathes and turning centers. It features a TiAlN finish applied via PVD coating and is manufactured to the KC5025 grade, which suits interrupted cuts and a range of ferrous and non-ferrous materials. The insert covers an external pitch range of 1.25 to 4.00 mm (6 to 20 TPI) and an internal pitch range of 2.00 to 5.00 mm (5 to 12 TPI), making it a versatile option for shops that thread across multiple standards. The left-hand configuration and partial profile 60-degree thread form are built into the insert geometry.

This insert is suited for production threading operations in job shops, contract machining facilities, and maintenance and repair environments. The partial profile 60-degree geometry handles a broad pitch range without requiring a dedicated insert for each thread pitch, reducing tooling inventory. It fits the Top Notch insert system, which is common on toolholders designed for external and internal threading applications on manual and CNC turning equipment.

Key Features

• TiAlN finish via PVD coating for heat resistance and extended tool life
• KC5025 carbide grade rated for material grades C2 and C6
• Partial profile 60-degree thread form covers multiple pitches per insert
• Left-hand insert hand for reverse-direction threading applications
• External pitch range: 1.25 to 4.00 mm (6 to 20 TPI)
• Internal pitch range: 2.00 to 5.00 mm (5 to 12 TPI)

Compatibility

Designed for use with Top Notch series threading toolholders that accept size 3 inserts with a left-hand configuration. Consult the KENNAMETAL Top Notch toolholder selection guide to confirm holder compatibility before ordering.

Installation Notes

Threading inserts are installed and changed by qualified machinists or tooling technicians. Power down and lock out the machine spindle before seating or removing the insert. Use the correct torque wrench and clamping hardware specified for the Top Notch toolholder to avoid insert rocking or premature edge failure. Inspect the insert pocket and clamping screw for wear or damage before each insert change.