>> Search results for: 639363004 NSN Search Results National Stock Number (NSN) Description 4730-01-542-4641, 4730015424641 SLEEVE,PENETRATOR 4730-01-521-9003 , 4730015219003 THREAD PIECE,UNION 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