>> Search results for: 000081857 NSN Search Results National Stock Number (NSN) Description 4240-00-770-0269, 4240007700269 FILTER,RESPIRATOR,AIR FILTERING 4240-01-057-1009 , 4240010571009 RETAINER,CARTRIDGE 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