Carmex Thread Mills Solid Carbide - Fast Type - For Hard Materials - UN (UNC UNF UNEF UNS) - No. 8 x 32 - MT3Carmex Thread Mills Solid Carbide Fast Type is a high performance internal threading tool designed for hard materials. Built for engineers and machinists who demand precision and durability, this No. 8 x 32 MT3 thread mill handles demanding applications with confidence. Threading compatibility: supports UNC, UNF, UNEF, and UNS thread formats for versatile use across projects Size and shank: No. 8 x 32 thread milling size with a robust MT3 shank for