Male Connector Application Air Fitting Side A Connection Type Compression Fitting Side B Connection Type MNPTF Finish/Coating Nickel-Plated Fitting Material Brass Fitting Side A Tube Outer Diameter 1/4 in Maximum Operating Pressure 150 psi Maximum Operating Temperature 250 Degrees F Overall Length 1 19/32 in Specific Fitting Shape Straight Adapter Fitting Side B Pipe Size 1/4 in Thread Size A 17/32-24 Thread Size B 1/4-18 System of Measurement Imperial Standards DOT SAE