>> Search results for: S2056B NSN Search Results National Stock Number (NSN) Description 6640-00-439-8440, 6640004398440 CUVETTE,SPECTROPHOTOMETER 6640-01-157-9105 , 6640011579105 Cancelled -> Replaced by 6640011417437 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