>> Search results for: PT21B1 NSN Search Results National Stock Number (NSN) Description 7530-01-419-2040, 7530014192040 Cancelled -> Replaced by 7530014371142 7530-01-437-1142 , 7530014371142 TAPE,PAPER,COMPUTING MACHINE 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