Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number B421-155 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 B421-155 It is listed as Armfront. component manufactured by Hayssen Mfg Co, specifically under CAGE Code 27856. It is also accompanied by the NSN 3540006860952 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC .