>> Search results for: B31378072 NSN Search Results National Stock Number (NSN) Description 4820-00-320-1803, 4820003201803 Cancelled -> Replaced by 4820013931016 4820-01-393-1016 , 4820013931016 DISK,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