John Deere M63431 Hexagonal Lock Nut, 4.166 mm (0.164") is a durable hexagonal lock nut designed to securely fasten components and prevent loosening caused by vibration. It features key specifications including an 8.79 mm width across flats, Type B locking, 5.82 mm thickness, and 32 threads per inch, ensuring a precise fit and reliable performance. With a 0 mm height and a 4.17 mm thread size, this lock nut secure fastening for various applications. Made from high-quality general steel and finished with a zinc coating, it provides enhanced corrosion resistance and long-lasting strength. Model Number: M63431