At One Click Purchasing, we are your reliable source for the NSN part 20517 manufactured by Grove Valve Operations. We carry a wide range of popular NSN items on our website, including Stem Needle Valve like part number 20517 which is listed with the NSN 4820006596690 for easy identification. If you are interested in 20517 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.