Compression Nut, Application Air, Fitting Material Brass, Maximum Operating Pressure 400 psi, Maximum Operating Temperature 250 Degrees F, Overall Length 1 1/8 in, Thread Size 17/32-24, Specific Fitting Shape Nut, System of Measurement Imperial, Compatible Tube Outer Diameter 3/8 in, Standards DOT FMVSS 571.106, SAE J246, Compatible Tube Material Annealed Copper, Fitting Connection Type Compression, Hex Size 5/8 in, Minimum Operating Temperature -65 Degrees F