Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number 103990-1 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 103990-1 It is listed as Spring Helical Compression. component manufactured by Hartwell Corporation, specifically under CAGE Code 83014. It is also accompanied by the NSN 5360000835207 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 5360 Coil Flat Leaf and Wire Springs.