Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number X1539 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 X1539 It is listed as Block Assembly. component manufactured by Singer Co The Controls Div, specifically under CAGE Code 21290. It is also accompanied by the NSN 3550009200751 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC .