Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number HDL-4 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 HDL-4 It is listed as Switch Box. component manufactured by Niles Audio Corp, specifically under CAGE Code 0HXV2. It is also accompanied by the NSN 5930014454378 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 5930 Switches.