At One Click Purchasing, we are your reliable source for the NSN part B4578A manufactured by Electrometrics. We carry a wide range of popular NSN items on our website, including Attenuator Variable like part number B4578A which is listed with the NSN 5985010793723 for easy identification. If you are interested in B4578A 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.