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 5975-00-267-2770
NSN 5920-01-551-1295
NSN 5930-01-411-6534
NSN 5895-00-163-1333
NSN 7035-01-204-9851
NSN 5915-00-263-2175
NSN 5925-00-319-4212
NSN 6135-00-930-0810
NSN 5935-00-276-9413
NSN 5935-01-438-6864
NSN 5905-01-599-9460
NSN 6130-01-185-0310