Carmex Spiral Mill Threading Insert for NPT — H45-11.5NPTMT7 is a versatile spiral-threading solution designed to deliver precise NPT threads with efficient cutting action. Its spiral geometry enables smooth, controlled engagement, helping you achieve accurate results while reducing cycle times.

This insert is engineered for a broad range of applications, from fine threading on small components in compact machining centers to heavy-duty production on high-power milling machines. Expect steady cutting conditions, minimized vibration, and reliable indexing across different materials and production demands.

• High-Feed Spiral Design: Delivers smooth, controlled cutting at elevated feed rates, reducing cycle time and heat buildup while preserving accurate thread form.
• Flexible Insert Configuration and Reliable Indexing: Spiral toolholders accommodate 1 to 9 inserts in a compact diameter, with a unique clamping method that ensures precise index positioning and easy, quick indexing for less downtime.
• MT7 Sub-Micron Grade with TiN Coating: TiN multi-layer coating provides wear resistance and long tool life across a wide range of materials (ISO K10–K20), delivering consistent threading, roughing, and finishing results.

Together, these features translate into a reliable, efficient threading solution that helps you improve workflow, shorten setup and cycle times, and achieve dependable, high-quality thread finishes across diverse materials and production scales.