>> Search results for: BF421 NSN Search Results National Stock Number (NSN) Description 4920-00-003-3747, 4920000033747 INTERFACE DEVICE 4920-01-018-3176 , 4920010183176 INTERFACE DEVICE 4920-01-035-7068, 4920010357068 INTERFACE DEVICE 4920-01-073-4470 , 4920010734470 INTERFACE DEVICE 3950-99-256-5741, 3950992565741 PLUNGER,OPERATING 5961-33-126-6749 , 5961331266749 TRANSISTOR 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