At One Click Purchasing, we are your reliable source for the NSN part 490A manufactured by Control Data Corp. We carry a wide range of popular NSN items on our website, including Circuit Card Assembly like part number 490A which is listed with the NSN 5998009598553 for easy identification. If you are interested in 490A 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.