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 4 mm Maximum Operating Pressure 1 450 psi Overall Length 21 mm Specific Fitting Shape 90 Degrees Elbow Adapter Fitting Side B Pipe Size 1/8 in Thread Size B 1/8-27 Series Ermeto DIN System of Measurement Metric