Hand tap has plug type and forming style, high speed steel-cobalt with TiCN finish, size M2.6, pitch 0.45 mm, metric, 2.5P, pitch diameter limits D3, shank diameter 2.500". Cobalt and powdered metal thread forming taps create strong threads without creating chips and are recommended for forming internal threads in aluminum as well as carbon, alloy, die, and stainless steels.