John Deere 5/8" Blade Mounting Lock Nut, 5-Pack is designed for the secure attachment of mower blades, ensuring optimal fit and performance. This lock nut features a 23.81 mm (0.94 in) width across flats, a 15.88 mm (5/8 in) thread size, and 18 threads per inch, providing a precise and reliable fit. With a locking type E and a thickness and height of 13.60 mm (0.54 in), it enhanced stability during use. Crafted from high-quality general steel, this lock nut delivers durability and strength, while its zinc finish ensures excellent corrosion resistance and long-lasting protection. Model Number: