The McCormick 3661428M1 is a genuine OEM screw designed for secure fastening in a wide range of McCormick agricultural tractors. This essential component ensures reliable performance and proper assembly across numerous models, including C, CX, F, MC, MTX, T, V, X10, X2, X3, X4, X5, X6, X7, and X8 series tractors. It is also cross-referenced as an equivalent OEM part for Landini, Massey Ferguson, and Valpadana equipment, ensuring broad compatibility and ease of replacement. Weighing 0.02 kg, this screw meets original manufacturer specifications for durability and fit.