Carmex Thread Mills Solid Carbide - Fast Type - For Hard Materials - UN (UNC UNF UNEF UNS) - No. 6 x 32 - MT3Carmex FSH Thread Mills are high performance solid carbide tools engineered for precise thread milling in hard materials. With an MT3 shank and compatibility with UN, UNC, UNF, UNEF, and UNS thread standards, these fast type mills are ideal for producing No. 6 x 32 threads in demanding applications. Material & construction: Solid carbide body delivers exceptional rigidity and wear resistance for sustained accuracy in hard metals. Coating: Ultra fine