Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number 11R03-48 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 11R03-48 It is listed as Retainer Coupler. component manufactured by Hydro Fitting Manufacturing Corp, specifically under CAGE Code 13899. It is also accompanied by the NSN 1680016492461 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 1680 Miscellaneous Aircraft Accessories and Components.