GUHRING 9039100158750 Sp Flute Tap, Mod Bottom, 5/8 Inx11, TiN. More details: Spiral Flute Tap, Right Hand, Tap Style Modified Bottoming, Size 5/8 In., Pitch 11, Material Powdered Metal Cobalt, TiN Finish, Overall Length 3-13/16 In., Thread Length 15/16 In., Shank Dia. 0.480 In., Number of Flutes 4, Thread Type UNC, Pitch Diameter Limits 2B, List Number 3910, Standards ANSI