At One Click Purchasing, we are your reliable source for the NSN part 40559-4 manufactured by Eaton Aerospace Ltd. We carry a wide range of popular NSN items on our website, including Wire Nonelectrical like part number 40559-4 which is listed with the NSN 9505011913030 for easy identification. If you are interested in 40559-4 item, then take the advantage of our online RFQ service, or peruse our website as you see fit to find other items of interest that you may wish to learn more about.