At One Click Purchasing, we are your reliable source for the NSN part 121-SPEC manufactured by Nsgdatacom Inc. We carry a wide range of popular NSN items on our website, including Ammeter like part number 121-SPEC which is listed with the NSN 6625013483871 for easy identification. If you are interested in 121-SPEC 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.