Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number SPI-51 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 SPI-51 It is listed as Spider Differential. component manufactured by Dresserrand Company, specifically under CAGE Code 93236. It is also accompanied by the NSN 3040012617904 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 3040 Miscellaneous Power Transmission Equipment.