UCR Male Nut Weld Fittings- Metal Gasket Face Seal FittingsPart No.UCR SizeDimension (mm)MinchAEFF-CMN-04-1/418.009.1015.289/16-18UNFF-CMN-08-1/220.0015.0023.817/8-14UNFF-CMN-12-3/425.4022.6032.941 1/4-18UNFF-CMN-16-130.2030.5041.27 1/2-20UNF