1st end is swagelok 2t type.
No other part numbers with same form, fit, and function found.
An adapter having machine threads (straight threads other than pipe or hose series) designed to accommodate a tube on one end or an unthreaded end designed to accommodate a tube. The other end has external or internal machine threads (straight threads other than pipe or hose series) and is designed to facilitate a gasket, preformed packing, washer, or the like to form a seal at the boss. It is designed to join a tube or tube fitting to a boss or boss fitting in a straight line on items such as tanks, housings, valve fittings, and the like. See also coupling, tube and nipple, tube.
Classification: Other fittings nesoi of alloy steel not stainless
NSN 6240-00-869-1591
NSN 6685-01-458-6469
NSN 6320-01-198-4024
NSN 6130-00-952-0819
NSN 5835-00-397-7697
NSN 6620-00-144-4760
NSN 5930-01-311-9938
NSN 6130-00-945-1098
NSN 5855-00-466-2309
NSN 5935-01-270-6247
NSN 5965-00-680-9749
NSN 6650-00-925-1274