At One Click Purchasing, we are your reliable source for the NSN part 231H manufactured by Frederick Custom Machining Inc. We carry a wide range of popular NSN items on our website, including Washer Shouldered like part number 231H which is listed with the NSN 5310002759193 for easy identification. If you are interested in 231H 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.