At One Click Purchasing, we are your reliable source for the NSN part 31B4 manufactured by A R F Products Inc. We carry a wide range of popular NSN items on our website, including Coupling Shaft Flex like part number 31B4 which is listed with the NSN 3010006404832 for easy identification. If you are interested in 31B4 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.