Bulkhead Union Application Air Fitting Side A Connection Type Compression Fitting Side B Connection Type Compression Fitting Material Brass Fitting Side A Tube Outer Diameter 3/16 in Fitting Side B Tube Outer Diameter 3/16 in Maximum Operating Pressure 150 psi Maximum Operating Temperature 200 Degrees F Overall Length 1 13/16 in Specific Fitting Shape Straight Bulkhead Union Compatible Fitting Brands NTA Thread Size A 5/16-24 Thread Size B 5/16-24 Series NTA