At One Click Purchasing, we are your reliable source for the NSN part 3640 manufactured by Astronics Test Systems Inc. We carry a wide range of popular NSN items on our website, including Amplifier Direct Current like part number 3640 which is listed with the NSN 5996003515685 for easy identification. If you are interested in 3640 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.