At One Click Purchasing, we are your reliable source for the NSN part 042121003 manufactured by L 3 Communications Elac Nautik Gmbh. We carry a wide range of popular NSN items on our website, including Nut Plain Hexagon like part number 042121003 which is listed with the NSN 5310121550596 for easy identification. If you are interested in 042121003 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.