Carmex Thread Mills Carbide - Hard Type - UN (UNC UNF UNEF UNS) - 1/2 x 12 - MT11Carmex Thread Mills Carbide Hard Type are precision solid carbide tools engineered for demanding thread milling and chamfering in a single setup. Designed for die and mold shops and manufacturers working with tough materials, this 1 2 in diameter tool with a 12 TPI thread form and MT11 shank delivers reliable performance across a range of materials and applications. Diameter and thread form: 1 2 in diameter with 12 TPI UNC UNF UNEF UNS thread options