Union Application Gases Liquids Fitting Side A Connection Type Compression Fitting Side B Connection Type Compression Fitting Material Stainless Steel Fitting Side A Tube Outer Diameter 5/8 in Fitting Side B Tube Outer Diameter 5/8 in Material Grade 316 Maximum Operating Pressure 6 100 psi Maximum Operating Temperature 649 Degrees C Overall Length 2 1/16 in Specific Fitting Shape Straight Connector Compatible Fitting Brands A-LOK Thread Size A 7/8-20 Thread Size B 7/8-20