Hose Connector Application Air Fitting Side A Connection Type Compression Fitting Side B Connection Type MNPT Fitting Material Brass Fitting Side A Tube Outer Diameter 1/2 in Maximum Operating Pressure 225 psi Maximum Operating Temperature 200 Degrees F Specific Fitting Shape Straight Adapter Fitting Side B Pipe Size 3/8 in Thread Size B 3/8-18 System of Measurement Imperial Standards DOT FMVSS 571.106 Compatible Tube Material Rubber Minimum Operating Temperature 40 Degrees F