Summary Information (click on this NSN number for detailed information: 4730-00-003-1827)
Adapter, also referenced with federal logistics item name code 29657:
An adapter having a flange connection on one end designed to connect with another flange connection or a compression type mounting pad. the other end has machine threads (straight threads other than pipe or hose series) designed to accommodate a tube or is unthreaded and designed to accommodate a tube. it is designed to join a flange or flange fitting to a tube or tube fitting in a straight line.