At One Click Purchasing, we are your reliable source for the NSN part SP139121-1 manufactured by Spencer Industries Inc. We carry a wide range of popular NSN items on our website, including Regulator Voltage like part number SP139121-1 which is listed with the NSN 6110004719425 for easy identification. If you are interested in SP139121-1 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.