>> Search results for: 22025710 NSN Search Results National Stock Number (NSN) Description 4240-66-116-1992, 4240661161992 FILTER,RESPIRATOR,A 4240-66-134-2470 , 4240661342470 FILTER,PARTICULATE 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