>> Search results for: 5K21C NSN Search Results National Stock Number (NSN) Description 4320-01-246-6334, 4320012466334 PUMP UNIT,CENTRIFUGAL 4320-01-274-0437 , 4320012740437 PUMP UNIT,CENTRIFUGAL 1 Related Inventory Search You can use this search box to continue searching. Search parameters can include any combination of characteristics, specifications, description, partial part numbers, NSN or other stocking number. Special characters are not needed and are automatically stripped before searching. Do you sell this part? Become part of our growing pool of certified suppliers. Send Information