At One Click Purchasing, we are your reliable source for the NSN part 21052 manufactured by Dover Engineered Systems Inc. We carry a wide range of popular NSN items on our website, including Valve Restrictor Ch like part number 21052 which is listed with the NSN 4820015139740 for easy identification. If you are interested in 21052 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.