>> Search results for: 20840A NSN Search Results National Stock Number (NSN) Description 6685-00-135-5037, 6685001355037 Cancelled -> Replaced by 6685005154000 4820-14-462-1194 , 4820144621194 CLAPET,DE NON RETOU 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