>> Search results for: A51A20100V2191 NSN Search Results National Stock Number (NSN) Description 1680-01-021-0518, 1680010210518 SWITCHING ASSEMBLY 1680-01-017-9930 , 1680010179930 SWITCHING UNIT,LEFT 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