Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number 550056-01 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 550056-01 It is listed as Pin Spring. component manufactured by Sigma Tek Inc, specifically under CAGE Code 86887. It is also accompanied by the NSN 5315002915471 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 5315 Nails Machine Keys and Pins.