SAE J is split into multiple documents by SAE: SAE J details the internal (female) port dimensions. Nominal Tube OD1) Thread Size For the above applications, a port connection with an elastomeric seal, such as SAE straight thread port (SAE J/ISO), SAE four bolt split flange (SAE J/ISO), and ISO is recommended. For applications where elastomeric seals can’t be used, consult the manufacturer SAE STRAIGHT THREAD PORT DIMENSIONS. For complete specifications refer to SAE Standards J for straight thre