>> Search results for: WHATMAN2 NSN Search Results National Stock Number (NSN) Description 6640-00-844-9020, 6640008449020 PAPER,FILTER 6640-00-844-9021 , 6640008449021 PAPER,FILTER 6640-00-844-9023, 6640008449023 PAPER,FILTER 6640-00-844-9025 , 6640008449025 PAPER,FILTER 6640-00-850-7417, 6640008507417 PAPER,FILTER 6640-00-850-7418 , 6640008507418 PAPER,FILTER 6640-00-850-7419, 6640008507419 PAPER,FILTER 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