>> Search results for: 4KK21N2S NSN Search Results National Stock Number (NSN) Description 4820-00-064-4374, 4820000644374 Cancelled -> Replaced by 4820006731832 5945-01-064-4374 , 5945010644374 RELAY,ELECTROMAGNETIC 4820-01-294-7179, 4820012947179 VALVE,CHECK 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