At One Click Purchasing, we are your reliable source for the NSN part QQ-B-639 manufactured by Federal Specifications Promulgat. We carry a wide range of popular NSN items on our website, including Plate Metal like part number QQ-B-639 which is listed with the NSN 9535006404644 for easy identification. If you are interested in QQ-B-639 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.