Febi Bilstein Wheel Hub Nut (Fits: Ford) 03811 - Single. This high-quality nut is designed for a precision fit and OE matching quality. It features a yellow galvanized surface, a right-hand thread with a M20 x 1,5 internal thread size, and a spanner size of 30mm. The nut is made of steel with a tensile strength grade of 8 and has a thickness of 18mm. It is intended for the rear axle left fitting position. The part number is 03811. It is compatible with various Ford models including Fiesta Mk5, Focus, Fusion, Street Ka, Ka, Puma, Sierra, and Escort, as well as Mazda 2 and 121. OE numbers for comparison include Ford PKW 6 172 599 and Ford US E820208S72.