Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number 817-521 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 817-521 It is listed as Electron Tube. component manufactured by Rainier Lighting And Electrical, specifically under CAGE Code 0F4R2. It is also accompanied by the NSN 5960014133877 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 5960 Electron Tubes and Associated Hardware.