>> Search results for: 4589K78 NSN Search Results National Stock Number (NSN) Description 4730-00-163-4438, 4730001634438 REDUCER,PIPE 4730-01-523-7537 , 4730015237537 UNION,PIPE 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