Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number R300 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 R300 It is listed as Electron Tube. component manufactured by Spectro Inc, specifically under CAGE Code 1BL81. It is also accompanied by the NSN 5960013918795 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 5960 Electron Tubes and Associated Hardware.