The Massey Ferguson 4280410M1 is a genuine OEM split pin, also commonly known as a cotter pin or clevis pin. This essential fastening component is designed to securely hold other parts in place, preventing their unintended movement or detachment within agricultural machinery. It is a critical part for maintaining the integrity and safe operation of a wide range of Massey Ferguson tractors and equipment across numerous series, including the 100, 200, 300, 500, 600, 1000, 2000, 3000, 3100, 3600, 4200, 4300, 5400, 6100, 6200, 6400, 7400, 8100, 8200, 8400, 8600, 8700, and 9000 series. This part supersedes previous OEM part numbers 353909X1 and 353909X.