>> Search results for: T3A421 NSN Search Results National Stock Number (NSN) Description 5960-00-622-9937, 5960006229937 Cancelled -> Replaced by 5960008151439 5960-00-818-1423 , 5960008181423 SHIELD,ELECTRON TUBE 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