Seco Tools 11NR16UN CP500 Indexable Carbide Insert

Seco Tools 11NR16UN CP500 is a Snap-Tap laydown, internal-threading indexable carbide insert designed for right-hand cutting at 16 threads per inch (UN) in small-diameter applications. Crafted from solid carbide and coated in a PVD TiAlN/TiN finish, it carries Seco’s CP500 grade for wear resistance and reliability in demanding threading tasks. Key geometry includes a 6.4 mm inscribed circle (approximately 0.252 in), a 3.0 mm thickness (0.118 in), and an 11.0 mm length (0.433 in), with a 0.13 mm corner radius (about 0.005 in) and a 60° thread angle to match UN specifications. The insert is explicitly labeled for internal UN threading (16 TPI) and is intended for use in compatible Laydown threading holders within Seco’s threaded turning systems. This combination of carbide hardness, PVD coating, and precise 11NR16UN CP500 geometry supports consistent thread-form accuracy and surface finish, helping to improve tool life and process stability on components requiring tight internal threads.