At One Click Purchasing, we are your reliable source for the NSN part B4643 manufactured by Dresser Industries Inc. We carry a wide range of popular NSN items on our website, including Bearing Ball Annula like part number B4643 which is listed with the NSN 3110002939163 for easy identification. If you are interested in B4643 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.