At One Click Purchasing, we are your reliable source for the NSN part NS-4E manufactured by Roller Bearing Co Of America. We carry a wide range of popular NSN items on our website, including Bearing Plain Self like part number NS-4E which is listed with the NSN 3120012310718 for easy identification. If you are interested in NS-4E 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.