Male Connector Application Air Fitting Side A Connection Type Compression Fitting Side B Connection Type MNPT Fitting Material Brass Fitting Side A Tube Outer Diameter 5/8 in Maximum Operating Pressure 400 psi Maximum Operating Temperature 250 Degrees F Overall Length 2 21/32 in Specific Fitting Shape Straight Adapter Fitting Side B Pipe Size 1/2 in Thread Size B 13/16-18 Series Air Brake System of Measurement Imperial Standards DOT FMVSS 571.106 SAE J246