Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number S639-1 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 S639-1 It is listed as Bearingballannular. component manufactured by The Boeing Company, specifically under CAGE Code 77272. It is also accompanied by the NSN 3110016717630 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 3110 Bearings Antifriction Unmounted.