Nuc equipment. Ssr name is reducer expander
An adapter having standard pipe threads on one end or an unthreaded end designed to accommodate a pipe. 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 pipe or pipe fitting to a boss or boss fitting in a straight line on items such as tanks, housing, valve fittings, or the like. See also adapter bushing and coupling, pipe.
NSN 6150-01-506-9151
NSN 6240-00-771-2263
NSN 6645-00-358-7379
NSN 6645-01-442-6476
NSN 6145-00-470-1606
NSN 6150-00-223-5840
NSN 5999-01-484-9059
NSN 5930-01-016-8636
NSN 5915-01-579-7254
NSN 5855-01-093-8202
NSN 5930-00-841-6176
NSN 6135-00-519-1325