At One Click Purchasing, we are your reliable source for the NSN part 1645 manufactured by Ryan Equipment Co Inc. We carry a wide range of popular NSN items on our website, including Base Regulator Shie like part number 1645 which is listed with the NSN 2920003790146 for easy identification. If you are interested in 1645 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.