Hertel H05766936 Threading Insert 14 Tpi Nptf Solid Carbide

Product Description

The HERTEL H05766936 is a solid carbide laydown threading insert designed for cutting external NPTF threads on a lathe or threading machine. It carries the HG630TR grade designation and features a TiC/TiN coating that extends cutting edge life in demanding thread-turning applications. The insert is configured for right-hand cutting, operates at 14 threads per inch, and fits a 3/8-inch inscribed circle toolholder seat. With a thickness of 0.146 inches and a relief angle of zero degrees, it is built to the 16ER insert style specification. Machinists and tool-and-die professionals working with pipe fittings, couplings, and threaded connectors rely on this insert for accurate, repeatable NPTF profile generation.

This insert is suited for external NPTF thread-turning operations in job shops, production machining environments, and maintenance facilities. NPTF threads are dry-seal pipe threads used in hydraulic and pneumatic systems where a pressure-tight connection is required without the use of thread sealant. The H05766936 is appropriate for machining ferrous and non-ferrous materials where a TiC/TiN-coated solid carbide tool provides the required wear resistance and edge stability at production cutting speeds.

Key Features

• Solid carbide substrate for rigidity and wear resistance in threading operations
• TiC/TiN coating extends tool life and reduces friction at the cutting edge
• 14 TPI NPTF thread profile for dry-seal pipe thread applications
• Right-hand external thread orientation for standard lathe setup
• 16ER insert style with 3/8-inch inscribed circle for broad toolholder compatibility
• Zero-degree relief angle laydown geometry for stable seating in the pocket

Compatibility

Designed as an OEM-style replacement threading insert for 16ER-style toolholders accepting a 3/8-inch inscribed circle laydown insert seat.

Installation Notes

Threading inserts of this type are installed and replaced by machinists using the appropriate torx or hex key for the toolholder clamping screw — consult the toolholder manufacturer for the correct torque procedure. Ensure the machine spindle is fully stopped and all power is isolated before indexing or replacing an insert. Verify insert seating and pocket cleanliness before clamping to prevent rocking or chatter. Always confirm thread pitch and insert style against the toolholder specification before running the first pass.