At One Click Purchasing, we are your reliable source for the NSN part 5409 manufactured by Howell Laboratories Inc. We carry a wide range of popular NSN items on our website, including Valve Safety Relief like part number 5409 which is listed with the NSN 4820013227578 for easy identification. If you are interested in 5409 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.