[Size] The thread size of 4an is 7/16-20 UNF；OD of barb: 1/4 inch.
[Parameter] Max Pressure: 4000PSI; Working Temp Range: -40℉ to 248℉.
[Material] Made of 6061-T6 aluminum alloy.
[Seal] AN side is sealed with 37 degree angle.
[Application] Only work with rubber hose. It is recommended to use clamps to ensure a better seal during installation.