At One Click Purchasing, we are your reliable source for the NSN part J520U manufactured by Joint Electronics Type Designation System. We carry a wide range of popular NSN items on our website, including Interconnecting Box like part number J520U which is listed with the NSN 6625005193811 for easy identification. If you are interested in J520U 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.