>> Search results for: A57439 NSN Search Results National Stock Number (NSN) Description 4820-00-580-7311, 4820005807311 DISK,VALVE 5305-14-208-3932 , 5305142083932 VIS 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