At One Click Purchasing, we are your reliable source for the NSN part 405387 manufactured by Caterpillar Work Tools Inc. We carry a wide range of popular NSN items on our website, including O Ring like part number 405387 which is listed with the NSN 5331012976297 for easy identification. If you are interested in 405387 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.