Hertel H05766977 Threading Insert 11.5 Tpi Nptf

Product Description

The HERTEL H05766977 is a laydown threading insert designed for cutting internal NPTF threads at 11.5 threads per inch (TPI). Manufactured from solid carbide with a TiC/TiN multilayer coating, this insert delivers consistent thread form and extended tool life in demanding threading operations. The 16ER insert style seats in compatible laydown toolholders and features a right-hand cutting geometry. With a 3/8 inch inscribed circle and a thickness of 0.146 inches, it is sized for standard threading applications in ferrous and non-ferrous materials. This insert is used by machinists and toolroom technicians in production and maintenance environments.

This insert is suited for internal NPTF tapered pipe thread operations in machining centers, CNC lathes, and manual turning equipment. NPTF threads are a common requirement in fluid-system components, fittings, and hydraulic or pneumatic assemblies found across industrial, plumbing, and fluid-power applications. The right-hand cutting orientation and 11.5 TPI specification make this insert appropriate for 3/8 inch and compatible NPTF pipe thread sizes used in production threading cycles.

Key Features

• Solid carbide substrate provides rigidity and wear resistance in threading operations
• TiC/TiN multilayer coating reduces friction and extends insert life
• 11.5 TPI pitch matches standard NPTF tapered pipe thread specifications
• Right-hand internal thread geometry for conventional NPTF threading cycles
• 16ER insert style compatible with standard laydown threading toolholders
• 3/8 inch inscribed circle and 0.146 inch thickness for precise seating and form accuracy

Compatibility

Designed as an OEM-style replacement threading insert for 16ER-style laydown toolholders used in internal NPTF threading applications.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine before changing inserts. Use the appropriate torx or hex key as specified by the toolholder manufacturer to secure the insert clamp to the correct seating torque. Inspect the insert pocket for chips or wear before seating a new insert to ensure proper form accuracy.