Union Application Gases Liquids Fitting Side A Connection Type Compression Fitting Side B Connection Type Compression Fitting Material Brass Fitting Side A Tube Outer Diameter 1/4 in Fitting Side B Tube Outer Diameter 1/4 in Maximum Operating Temperature 400 Degrees F 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 System of Measurement Imperial Standards ASME SB75 ASTM B75