Spiral Flute Tap Right Hand Tap Style Bottoming Size 1/2 In. Pitch 13 Material Powdered Metal Cobalt Steam Oxide Finish Overall Length 3-3/8 In. Thread Length 15/16 In. Shank Dia 0.367 In. Number of Flutes 3 Thread Type UNC Pitch Diameter Limits H3 List Number B101 Standards USCTI 302A