A washer faced wing nut is now included in the enlarged range of Bülte Plastics’ fasteners. These are available in M6 though other sizes are available on request. The thickness of the washer is 2mm and its diameter is 21mm. Polyamide 6.6 is the standard material, and alternative materials are available on request, including polyethylene and polypropylene (materials recommended for their food processing and medical compatibility). Other colours (blue, black) are also available on request.