Carmex Thread Mills Mini Type - For Hard Materials - UN (UNC UNF UNEF UNS) - No. 5, No. 6 x 40 - MT9Carmex Mini Type solid carbide thread mills are designed for precision threading in hardened materials, delivering reliable performance for UN thread standards (UNC, UNF, UNEF, UNS). Built to handle demanding applications, these tools pair compact mini geometry with robust carbide for consistent results. Diameter options: No. 5 and No. 6 for versatile small threading applications Length: 40 mm cutting overall length to reach tight, difficult to access