Spiral Flute Tap Right Hand Tap Style Modified Bottoming Size 7/16 In. Pitch 20 Material High Speed Steel-E Steam Oxide Finish Overall Length 3-15/64 In. Thread Length 45/64 In. Shank Dia 0.323 In. Number of Flutes 3 Thread Type UNF Pitch Diameter Limits H5 List Number 506SS Standards USCTI 302