At One Click Purchasing, we are your reliable source for the NSN part 21965 manufactured by Kidde Fenwal Inc. We carry a wide range of popular NSN items on our website, including like part number 21965 which is listed with the NSN 5310001665623 for easy identification. If you are interested in 21965 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.