At One Click Purchasing, we are your reliable source for the NSN part 664678 manufactured by L 3 Communications Electronic. We carry a wide range of popular NSN items on our website, including Coupling Tube like part number 664678 which is listed with the NSN 4730002257971 for easy identification. If you are interested in 664678 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.