>> Search results for: 1979778 NSN Search Results National Stock Number (NSN) Description 5985-01-400-1998, 5985014001998 WAVEGUIDE ASSEMBLY 6650-01-304-4253 , 6650013044253 RETAINER,OPTICAL ELEMENT 1 Related Inventory 270-0027PC659905-01-197-9778 RequestAdd to RFQ 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