>> Search results for: 639425602 NSN Search Results National Stock Number (NSN) Description 4710-01-537-4139, 4710015374139 TUBE AND FITTINGS,METALLIC 4730-01-540-8409 , 4730015408409 TAILPIECE,UNION 4730-01-540-5981, 4730015405981 CROSS,TUBE 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