>> Search results for: 9991107A04REV4ITEM2 NSN Search Results National Stock Number (NSN) Description 4320-01-504-0524, 4320015040524 IMPELLER,PUMP,CENTRIFUGAL 5310-01-502-5284 , 5310015025284 WASHER,FLAT 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