Carmex Thread Turning External Insert - UN (UNC,UNF,UNEF,UNS) - Right Hand - 16ER40UNK20 Die & Mould Collet Chucks Broad thread compatibility: A single

Broad thread compatibility: A single internal insert supports BSW

Use for precision slots

Left-Hand Spiral Flute with Right-Hand Cutting: Balances cutting direction and chip evacuation for smoother holes and cleaner finishes across materials

Hardened steel construction for durability: Designed to withstand daily use

The 2-flute geometry ensures smooth chip flow

Carmex Thread Turning External Insert - UN (UNC,UNF,UNEF,UNS) - Right Hand - 16ER40UNK20 Die & Mould Collet Chucks Broad thread compatibility: A singleCarmex Thread Turning External Insert, model 16ER40UNK20, is a versatile external threading insert with a triangular laydown geometry. It supports UNC, UNF, UNEF, and UNS thread standards, providing a practical single tool solution for a wide range of fastener sizes in busy shops. Designed for right hand external threads, this insert supports both routine and more demanding threading tasks, helping to minimize tool changes and improve consistency