Smic is qf, which is non-critical
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 6650-01-324-3329
NSN 5990-00-838-1082
NSN 5950-01-480-4232
NSN 5935-01-355-2273
NSN 5915-01-100-4105
NSN 7035-01-172-0250
NSN 5925-01-471-8175
NSN 6645-00-079-4087
NSN 4140-00-401-3123
NSN 5935-01-415-0272
NSN 2925-01-458-5808
NSN 6130-01-160-0227