>> Search results for: M1904J NSN Search Results National Stock Number (NSN) Description 3040-00-487-3014, 3040004873014 RING,PISTON 3040-99-822-3420 , 3040998223420 RING,PISTON 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