Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number 21-523 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 21-523 It is listed as Switchcentrifugal. component manufactured by Pollak Corp Transportation Elect, specifically under CAGE Code 77326. It is also accompanied by the NSN 5930016747229 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 5930 Switches.