At One Click Purchasing, we are your reliable source for the NSN part 201-4UM manufactured by Payson Casters Inc. We carry a wide range of popular NSN items on our website, including Caster Rigid like part number 201-4UM which is listed with the NSN 5340010590970 for easy identification. If you are interested in 201-4UM 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.