At One Click Purchasing, we are your reliable source for the NSN part US631B manufactured by University Sound Inc. We carry a wide range of popular NSN items on our website, including Microphone Dynamic like part number US631B which is listed with the NSN 5965012901258 for easy identification. If you are interested in US631B 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.