At One Click Purchasing, we are your reliable source for the NSN part 21391 manufactured by Venturo Manufacturing Inc. We carry a wide range of popular NSN items on our website, including Socket And Cap Asse like part number 21391 which is listed with the NSN 5975016320556 for easy identification. If you are interested in 21391 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.