Double Male Union Weld Fittings- Metal Gasket Face Seal FittingsPart No.UCR SizeDimension (mm)MinchAEFF-CDMU-04-1/439.404.5715.879/16-18UNFF-CDMU-08-1/247.2010.2223.807/8-14UNFF-CDMU-12-3/462.0015.7033.331 1/4-18UNFF-CDMU-16-165.8022.1041.271 1/2-20UNF