Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number 420-520 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 420-520 It is listed as Hose Nonmetallic. component manufactured by Hammond Mfg Co Ltd, specifically under CAGE Code L4225. It is also accompanied by the NSN 4720200019091 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 4720 Hose and Flexible Tubing.