Radium Engineering designed the 5/8in Barb to 10AN FST Fitting as a purpose-built solution that connects 5/8in Barb to 10AN FST Fitting, giving the system a direct transition between the two connection standards. That keeps the plumbing compact and serviceable while avoiding a stack of extra adapters in a fuel, oil, or other compatible fluid system.

Radium specifies 10AN AN/ORB sizing for this version, so confirm the surrounding system uses the same sizes and standards. Match both connection standards exactly and use the correct sealing method for the thread type being installed.