Carmex Thread Mills Multifunction - Hard Type - UN (UNC UNF UNEF UNS) - 1/2 x 13 - MT11The Carmex DMTH thread mill provides machinists with a dependable solution for creating precise UN threads in hardened steels, stainless steel, and high performance alloys. Its hard type construction supports consistent results where standard tools often fall short. Thread Profile: Designed specifically for UN series threads including UNC, UNF, UNEF, and UNS, with a nominal size of 1 2 x 13. Cutting Reach: Capable of thread depths up to twice the