At One Click Purchasing, we are your reliable source for the NSN part 21073 manufactured by Smiths Aerospace Ltd. We carry a wide range of popular NSN items on our website, including Block Filter like part number 21073 which is listed with the NSN 7035010955452 for easy identification. If you are interested in 21073 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.