John Deere 5/8" Blade Mounting Lock Nut, 2-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. Its locking type E design, combined with a thickness and height of 13.60 mm (0.54 in), provides enhanced stability during use. Crafted from high-quality general steel, this lock nut durability and strength, while the zinc finish delivers excellent corrosion resistance and longevity, making it a reliable choice for maintaining your mower's blade integrity. Model Number: