Air Brake Fitting, Application Air, Fitting Material Brass, Maximum Operating Pressure 225 psi, Maximum Operating Temperature 200 Degrees F, Overall Length 7/8 in, Thread Size 11/16-20, Specific Fitting Shape Nut, System of Measurement Imperial, Compatible Tube Outer Diameter 3/4 in, Standards DOT FMVSS 571.106, Fitting Connection Type Compression, Minimum Operating Temperature 40 Degrees F