>> Search results for: MP2978 NSN Search Results National Stock Number (NSN) Description 4920-00-204-4450, 4920002044450 RETAINER,PINS,FAN R 5975-99-406-3633 , 5975994063633 SLEEVE,IDENTIFICATI 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