Kennametal 1799238 Threading Insert NT1L KC5010 Carbide

Product Description

The KENNAMETAL 1799238 is a carbide threading insert designed for internal thread cutting operations. Styled as NT1L within the Top Notch series, it features a TiAlN finish applied via PVD coating process, which provides thermal resistance and wear protection during high-speed threading. This is a left-hand insert with a 60-degree included angle, suited for partial profile thread forms. It covers an internal pitch range of 1.00 to 2.00 mm and 12 to 24 TPI, making it versatile across metric and inch thread standards. Machinists and CNC operators install this insert into compatible Top Notch toolholders for precision threading on lathes and turning centers.

This insert is intended for internal threading applications in materials classified under C3 and C4 material grades, which generally correspond to cast iron and heat-resistant or titanium alloys. The NT1L style and left-hand orientation make it appropriate for threading bores where a left-hand cutting direction is required. It is used in production machining environments, job shops, and maintenance shops where consistent thread quality on internal features is required. The partial profile 60-degree thread standard supports a range of common thread forms without requiring a dedicated insert for each pitch.

Key Features

• TiAlN finish via PVD coating for improved wear resistance and thermal stability
• Left-hand cutting orientation for internal threading operations
• 60-degree partial profile covers 1.00 to 2.00 mm pitch and 12 to 24 TPI in a single insert
• KC5010 manufacturer grade carbide substrate engineered for C3 and C4 material grades
• NT1L insert style fits Top Notch series toolholders
• Corner radius of 0.08 mm (0.0031 inches) for controlled thread root geometry

Compatibility

Designed for use with KENNAMETAL Top Notch series toolholders accepting NT1L style inserts. Compatible with internal threading applications involving partial profile 60-degree thread forms across the stated pitch range.

Installation Notes

Installation should be performed by a qualified machinist following the toolholder manufacturer's clamping instructions for Top Notch style inserts. Ensure the machine spindle is fully stopped and the toolholder is secured before seating or replacing the insert. Verify insert orientation matches the required hand of cut before engaging the workpiece. Inspect the insert seat and clamping screw for debris or wear before each insert change to maintain accurate seating and thread quality.