UNS. HSS M2 High quality General Purpose Taps, Ground Thread available in sets of three and also individual taps. Right HAND Cutting, Straight Flute. Set of 3 taps including Taper, Second and Bottoming (Plug) taps. You can specify individual taps from the product menus or by calling us directly and quoting (TS) UNS 1 3/4" x 8. Pitch 8