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 1/4 in Fitting Side B Tube Outer Diameter 1/4 in Material Grade 316 Maximum Operating Pressure 10 300 psi Maximum Operating Temperature 649 Degrees C Overall Length 1 5/8 in Specific Fitting Shape Straight Connector Compatible Fitting Brands A-LOK Thread Size A 7/16-20 Thread Size B 7/16-20