At One Click Purchasing, we are your reliable source for the NSN part M640-1 manufactured by Teledyne Reynolds Inc. We carry a wide range of popular NSN items on our website, including Relay Solid State like part number M640-1 which is listed with the NSN 5945010211278 for easy identification. If you are interested in M640-1 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.