At One Click Purchasing, we are your reliable source for the NSN part 640FB1-4IN manufactured by Imperial Inc. We carry a wide range of popular NSN items on our website, including Cap Tube like part number 640FB1-4IN which is listed with the NSN 4730002608284 for easy identification. If you are interested in 640FB1-4IN 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.