Carmex Carbide Threading Insert for NPT, TiAlN coated, in a 12–18 NPT range. This versatile insert set is designed for machinists and job shops who need reliable, multi-purpose threading performance on common pipe-thread profiles.

• Thread profiles covered: A comprehensive collection that supports all common thread profiles, optimized for efficient setup on a wide range of jobs.
• Length options: Available in five lengths from 12 mm to 40 mm to fit different toolholders and workpiece geometries.
• Pitch range: Depending on length, accommodates pitches from 0.5 mm (32 TPI) up to 6.0 mm (4 TPI) for versatile threading capabilities.
• Double‑sided cutting edges: Each insert offers two cutting edges for extended life, with exceptions for BSPT / NPT / NPTF / American Buttress / API RD profiles.
• Internal/External capability: For many thread profiles, the same insert can machine both internal and external threads, reducing the need for multiple tools (note: ISO / UN / NPSM / UNJ / Acme may require alternate approaches).
• Coating: TiAlN coating enhances hardness and wear resistance, helping tools stand up to challenging materials and high-speed operation.
• Material: Solid carbide construction delivers rigidity and stable performance across common threading applications.
• Thread range: Specifically suited for NPT sizes in the 12–18 NPT range, aligning with standard pipe-thread applications.

These inserts are crafted to deliver precise, consistent thread forms with minimal downtime. The TiAlN coating reduces heat buildup and wear, while the double-edged design and wide length/pitch options provide flexibility for quick changeovers and streamlined setups. Ideal for workshop machines, CNC lathes, and production environments where multiple NPT threading tasks are routine, this Carmex set helps you complete more jobs with fewer tool changes and reliable results from start to finish.