At One Click Purchasing, we are your reliable source for the NSN part 21-427-3 manufactured by Messinger Bearings Corporation. We carry a wide range of popular NSN items on our website, including Bearing Ball Duplex like part number 21-427-3 which is listed with the NSN 3110007239429 for easy identification. If you are interested in 21-427-3 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.