Hertel H05766852 Threading Insert 27 Tpi Nptf Carbide

Product Description

The HERTEL H05766852 is a solid carbide laydown threading insert designed for right-hand external NPTF threading operations. It carries an HG630TR manufacturer grade and features a TiC/TiN coating that extends cutting life in demanding threading applications. With a thread pitch of 27 threads per inch, a 3/8-inch inscribed circle, and a thickness of 0.146 inches, this insert is sized for precision pipe thread cutting on ferrous and non-ferrous materials. It is installed by machinists and toolroom technicians working on CNC lathes and manual threading equipment where accurate NPTF thread form is required.

This insert is suited for producing National Pipe Taper Fuel (NPTF) threads on external workpiece diameters in production and job-shop environments. The laydown-style geometry seats securely in compatible 16ER-style toolholders. It is a practical choice for shops threading pipe fittings, couplings, and fluid-system components where a pressure-tight dry-seal thread is specified. The 27 TPI pitch targets smaller pipe sizes where fine, accurate thread form is critical to sealing performance.

Key Features

• Solid carbide construction with TiC/TiN coating for extended tool life
• 27 threads per inch for small-diameter NPTF external threading
• 3/8-inch inscribed circle fits 16ER-style laydown insert pockets
• Right-hand cut orientation for standard lathe threading passes
• 0.146-inch insert thickness provides consistent seating and rigidity
• Relief angle of 0 degrees maintains full thread-form accuracy on NPTF profiles

Compatibility

Designed for use in 16ER-style threading toolholders that accept laydown insert geometry for external NPTF threading applications.

Installation Notes

Installation is performed by a machinist or CNC toolroom technician. Power down and lock out the machine before seating or replacing the insert. Use the correct torque wrench and insert clamp screw for the toolholder manufacturer's specified clamping procedure to avoid insert movement during the cut. Inspect the insert pocket for chips or debris before seating the new insert, and confirm thread pitch against a calibrated thread gauge before running production parts.