At One Click Purchasing, we are your reliable source for the NSN part E516-421 manufactured by Huck International Inc. We carry a wide range of popular NSN items on our website, including Screw Machine like part number E516-421 which is listed with the NSN 5305012761610 for easy identification. If you are interested in E516-421 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.