The McCormick 401713R1 is a genuine OEM washer designed for various McCormick tractor models. This essential component ensures proper spacing and secure fastening within critical assemblies. It features an inner diameter of 25.4 mm, an outer diameter of 44.45 mm, and a thickness of 2.38 mm, making it suitable for a wide range of McCormick 354, 374, 384, 444, 454, 474, 475, 484, 485, 574, 584, 585, 674, 684, 685, 784, 785, 884, 885, 985, 2400, and 2500 series tractors.