At One Click Purchasing, we are your reliable source for the NSN part HS74-6-40-4 manufactured by Helio Aircraft Ltd. We carry a wide range of popular NSN items on our website, including Hose Air Duct like part number HS74-6-40-4 which is listed with the NSN 4720014112205 for easy identification. If you are interested in HS74-6-40-4 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.