Kennametal 1799525 Threading Insert KC5025 Carbide 4 Tpi

Product Description

The KENNAMETAL 1799525 is a carbide threading insert designed for cutting internal and external threads on API Rotary Shoulder Connection profiles. Manufactured under the Top Notch series, this insert carries the NDC insert style with a KC5025 grade carbide substrate and a PVD-applied TiAlN finish coating. It is configured for right-hand cutting at 4 threads per inch (TPI) with a 60-degree included angle. The TiAlN coating provides thermal and wear resistance suited to demanding threading operations in oilfield and energy-sector machining environments. Installation requires compatible Top Notch toolholders and is performed by machinists and CNC turning center operators.

This insert is intended for threading API Rotary Shoulder Connection profiles, making it applicable in oil and gas component manufacturing where drill collar, drill pipe, and related tubular connections are machined. It handles both internal and external thread forms and is suited for production environments where consistent thread geometry and tool life are critical. The C2 and C6 material grade ratings indicate suitability for machining steel and other ferrous materials common in energy-sector applications. Minimum order quantity is 5 inserts.

Key Features

• Carbide substrate with PVD TiAlN finish coating for extended wear resistance in ferrous thread cutting
• NDC insert style, KC5025 manufacturer grade, sized at 4038 insert size
• 4 TPI internal pitch with 60-degree included angle for API Rotary Shoulder Connection thread profiles
• Cuts both internal and external thread forms from a single insert style
• Right-hand cutting configuration
• Corner radius of 0.0354 inches (0.9 mm) for controlled thread root geometry

Compatibility

Designed for use in Top Notch series toolholding systems that accept NDC-style inserts sized 4038. Compatible with API Rotary Shoulder Connection threading applications requiring a right-hand, 4 TPI insert with a 60-degree included angle.

Installation Notes

This insert is installed by machinists or CNC lathe operators using a torx or hex key appropriate for the Top Notch clamping system. Ensure the machine spindle is fully stopped and the toolholder is secure before seating or replacing the insert. Verify insert orientation and hand designation match the programmed cutting direction before running. Follow all machine guarding and PPE protocols during insert changes.