Part Number 86585245 - A New 5/8-11 Jam Nut For An International D-407, DT-407 Engines, Case 188, 201 Engines, CaseIH 1620, 1640, 1660, 1670, 1680 Combines, Case 660, 1060 Combines, CaseIH 1800 Cotton Harvester, Case 303, 304, 402, 404 Corn Head, Case 410, 420, 430, 440, 1529, 1700-Series, 1818, 1825, 1840, 1845, 1845B, 1845S Skid Steers, Case 770, 870, 1200, 1570, 2470, 2670, 2870, 4490, 4494, 4690, 4694, 4890, 4894, 4994 Tractors. Old Part Numbers Are C26498, A161181, C29677, A57224, IH124925, H736785, K617052, H637389, O4311AB, L13897, L26881, L26880, L48819, 118625, 124925, 1457544M92, 18-252, 21195, 25-156, 353430X1, 355977R11, 358048R91, 68800D, 68800DX, E7NN3N602AA, L53285, L53286, S202678, S234872, S234960, S4243, S611679, S615498, TRA8305406.