Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number 021-03999-01 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 021-03999-01 It is listed as Amplifier Audio Frequency. component manufactured by Raytheon Australia, specifically under CAGE Code Z0Y24. It is also accompanied by the NSN 5996661544151 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC .