Connection style on 1st end is b64 and 2nd end is b81
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.
NSN 5930-00-633-8008
NSN 6135-00-182-7008
NSN 7035-01-537-2644
NSN 6685-01-087-6766
NSN 5985-01-510-6171
NSN 6130-01-081-5679
NSN 6620-01-563-6862
NSN 6320-01-374-9924
NSN 6620-01-535-6925
NSN 5960-00-222-7772
NSN 5950-01-634-0677
NSN 5990-00-636-4218