Carmex Spiral Mill Threading Insert for NPT (H17-14NPTMT7) is a spiral‑fluted threading insert designed to deliver precise, efficient NPT threading across a wide range of materials and machining setups. Whether you’re operating a compact machining center or a high‑power milling system, this tool promotes smooth cutting at higher feed rates and shorter cycle times.

Its flexible insert system and unique clamping enable optimal indexability, letting you mount 1 to 9 inserts in a compact cutting diameter while enjoying quick changeovers and reliable, repeatable results.

• High‑speed threading with smooth cutting: The spiral design enables a smooth cutting operation at a high feed rate, reducing overall machining time without sacrificing finish quality.
• Flexible inserts with reliable indexability: Spiral toolholders hold 1 to 9 inserts in a small diameter, and the innovative clamping method ensures precise indexing for quick, dependable tool changes.
• Durable MT7, TiN‑coated for broad material use: Inserts are MT7 Sub‑Micron Grade with Titanium Nitride multi‑layer coating (ISO K10‑K20), a general‑purpose option suitable for all materials and capable of delivering consistent threading, roughing, and finishing results.

This combination of spiral design, versatile indexing, and robust TiN coating helps you achieve reliable finishes, improve workflow efficiency, and maintain consistent performance across demanding threading and milling tasks.