Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number B4578A with rapid responses always offered by our staff. To ensure that you locate and procure exactly what you need with ease, we list parts with as much information as we can. For example, part number B4578A It is listed as Attenuator Variable. component manufactured by Electro Metric Co, specifically under CAGE Code 18581. It is also accompanied by the NSN 5985010793723 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 5985 Antennas Waveguides and Related Equipment.