>> Search results for: N23221B1 NSN Search Results National Stock Number (NSN) Description 5805-99-528-6788, 5805995286788 CONVERTER,TELEPHONE 5805-99-538-7672 , 5805995387672 RINGING UNIT 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