John Deere 14M7166 M8 Hexagonal Lock Nut, 5-Pack is designed to securely fasten bolts and prevent loosening caused by vibration. This lock nut features a precise width across flats of 13 mm (1/2 inch) and a thread pitch of 1.25 mm (0.05 inch), ensuring an exact fit. It incorporates a locking type B mechanism and has a wrench height of 5.50 mm (0.22 inch) to provide enhanced stability during use. Crafted from high-quality materials, this lock nut durability and long-lasting performance. Its zinc coating helps resist corrosion, extending the life of the nut even in challenging environments. Model Number: 14M7166