John Deere 9/16" Hexagonal Lock Nut, 5-Pack is designed to securely fasten bolts and prevent loosening caused by vibration. This lock nut features a 14.27 mm (9/16 inch) thread size with 18 threads per inch, making it i for heavy-duty applications. It measures 20.64 mm (0.81 inch) in thickness and 10.41 mm (0.41 inch) in height, ensuring robust performance. Constructed from high-quality steel, this lock nut durability and strength, while its zinc finish provides excellent corrosion resistance and long-lasting protection. Model Number: