Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number BS4320 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 BS4320 It is listed as Washer Flat. component manufactured by British Standards Institution, specifically under CAGE Code K7766. It is also accompanied by the NSN 5310991313157 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 5310 Nuts and Washers.