John Deere K40003 3/8" Hexagonal Lock Nut, 10-Pack is designed to securely fasten components and prevent loosening caused by vibration. This lock nut features a width across flats of 14.27 mm (9/16 inch) and a thread size of 9.52 mm (3/8 inch), making it suitable for a wide range of applications. It incorporates a locking type D mechanism and has a thickness of 8.89 mm (0.35 inch) to provide enhanced stability. Crafted from high-quality general steel and finished with a zinc coating, this lock nut superior corrosion resistance for long-lasting durability. Model Number: K40003