At One Click Purchasing, we are your reliable source for the NSN part 90689-1 manufactured by Boughton Engineering Limited. We carry a wide range of popular NSN items on our website, including Spacer Ring like part number 90689-1 which is listed with the NSN 5365990006058 for easy identification. If you are interested in 90689-1 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.