At One Click Purchasing, we are your reliable source for the NSN part B559 manufactured by Dresser Industries Inc. We carry a wide range of popular NSN items on our website, including Cock Drain like part number B559 which is listed with the NSN 4820005559761 for easy identification. If you are interested in B559 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.