Tube Nut Application Air Fitting Material Brass Maximum Operating Pressure 150 psi Maximum Operating Temperature 200 Degrees F Overall Length 7/16 in Thread Size 7/16-24 Specific Fitting Shape Nut System of Measurement Imperial Compatible Tube Outer Diameter 1/4 in Standards DOT/SAE J1402A Compatible Tube Material Nylon Fitting Connection Type Compression Minimum Operating Temperature 40 Degrees F