At One Click Purchasing, we are your reliable source for the NSN part 21637 manufactured by United Technologies Corporation. We carry a wide range of popular NSN items on our website, including Core Electromagneti like part number 21637 which is listed with the NSN 5950000191504 for easy identification. If you are interested in 21637 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.