At One Click Purchasing, we are your reliable source for the NSN part 40304 manufactured by Fastenal Co Inc. We carry a wide range of popular NSN items on our website, including Nut Plain Hexagon like part number 40304 which is listed with the NSN 5310015499579 for easy identification. If you are interested in 40304 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.