Steel tube fitting Application Gases Oils Fitting Side A Connection Type Compression Fitting Side B Connection Type NPT Fitting Material Steel Fitting Side A Tube Outer Diameter 12 mm Maximum Operating Pressure 9 137 psi Overall Length 38 mm Specific Fitting Shape 90 Degrees Elbow Adapter Fitting Side B Pipe Size 1/4 in Thread Size B 1/4-18 Series Ermeto DIN System of Measurement Metric