American Society of Mechanical Engineers (ASME) .1995. Errata to ASME Bl.15-1995, March 1997. 68р. This Standard establishes the basic triangular profile for the UNJ thread form, provides a system of designations, lists the standard series of diameterpitch combinations for diameters from 0.600 to 6.000 in., and specifies limiting dimensions and tolerances.