At One Click Purchasing, we are your reliable source for the NSN part PL644 manufactured by Psg Controls Inc. We carry a wide range of popular NSN items on our website, including Thermometer Self In like part number PL644 which is listed with the NSN 6685008036421 for easy identification. If you are interested in PL644 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.