Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number 5990 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 5990 It is listed as Support Seat Fittin. component manufactured by Boeing Company The, specifically under CAGE Code 43999. It is also accompanied by the NSN 1680009669918 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 1680 Miscellaneous Aircraft Accessories and Components.