Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number 300-6 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 300-6 It is listed as Nut Tube Coupling. component manufactured by Chicago Fittings, specifically under CAGE Code 70026. It is also accompanied by the NSN 4730007402582 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 4730 Hose Pipe Tube Lubrication and Railing Fittings.