At One Click Purchasing, we are your reliable source for the NSN part 4221 manufactured by Dialight Corporation. We carry a wide range of popular NSN items on our website, including Standoff Threaded S like part number 4221 which is listed with the NSN 5340012854752 for easy identification. If you are interested in 4221 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.