John Deere 14M7166 M8 Hexagonal Lock Nut, 25-Pack is designed to securely fasten bolts and prevent loosening caused by vibration. This lock nut features a 13 mm (1/2 in) width across flats and a thread pitch of 1.25 mm (0.05 in) to ensure a precise and reliable fit. It incorporates a locking type B mechanism and a wrench height of 5.50 mm (0.22 in) to provide enhanced stability during use. Crafted from high-quality materials, this nut durability and long-lasting performance, while its zinc coating helps resist corrosion and extend its lifespan. Model Number: 14M7166