The McCormick 6683956A1 is a genuine OEM screw designed for secure fastening in a wide range of agricultural machinery. This essential component ensures proper assembly and reliable performance across McCormick, Landini, and Argo Tractors models including the X4, X5, X6, X7, and X8 series, as well as Landini 4, 5, 6, 7, and 8 series tractors. Weighing 0.01 kg, this screw meets original equipment specifications for durability and precise fit.