At One Click Purchasing, we are your reliable source for the NSN part 421-001 manufactured by Universal Machine Co Inc. We carry a wide range of popular NSN items on our website, including Connector Subassembly like part number 421-001 which is listed with the NSN 7490011435125 for easy identification. If you are interested in 421-001 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.