The Carmex Carbide Threading Insert, Unified, TiAlN Coated (model 21E12UN), is a versatile cutting solution designed for machinists who routinely produce Unified-threaded components. Built for reliability and long life, it’s the right choice for shops needing a single insert family that covers common profiles with precision.

• Coating: TiAlN-coated carbide for enhanced wear resistance and heat tolerance, helping maintain edge sharpness during continuous threading.
• Length range: Five active lengths from 12 mm to 40 mm, enabling efficient setup for a wide range of applications without changing tooling strategy.
• Cutting edges: Double-sided inserts provide two cutting edges per insert (except for BSPT/NPT/NPTF/American Buttress/API RD profiles), maximizing usable life per piece.
• Internal/External capability: For many thread profiles, the same insert can machine both internal and external threads, reducing the need for multiple inserts (with noted exceptions for ISO/UN/NPSM/UNJ/Acme).
• Material: Solid carbide substrate delivers rigidity, precision, and consistent thread quality across challenging materials and geometries.

Designed to tackle a wide spectrum of threading tasks, this unified insert line offers practical efficiency: fewer tool changes, reliable performance across common pitches from 0.5 mm (32 TPI) to 6.0 mm (4 TPI), and a durable TiAlN coating that helps extend tool life in production environments. Ideal for producing standard Unified threads on shafts, nuts, and connectors where consistent tolerances and clean finishes matter most.