>> Search results for: 80363972471X1X56SPCLN NSN Search Results National Stock Number (NSN) Description 4820-01-431-1519, 4820014311519 CARTRIDGE,STOP-CHECK VALVE 4820-01-517-0342 , 4820015170342 CARTRIDGE,STOP-CHECK VALVE 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