At One Click Purchasing, we are your reliable source for the NSN part S640 manufactured by General Services Administration Inc. We carry a wide range of popular NSN items on our website, including Dry Transfer Sheet like part number S640 which is listed with the NSN 7510011025155 for easy identification. If you are interested in S640 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.