Free shipping* on orders over $250 · in-stock orders typically arrive within 2-3 business days
Expedited shipping available at checkout
30-day returns on unused items · 25% restocking fee may apply
Electrical & special-order items non-returnable
Description
High-performance lock nut designed to secure fasteners and prevent loosening under vibration or torque. Features a width across flats of 12.70 mm (1/2 in) and a locking type D for reliable fastening in various applications. Measures 6.86 mm (0.27 in) in thickness, with a thread size of 7.92 mm (5/16 in) and 18 threads per inch for precise fitting. Made from high quality general steel for durability and long-lasting performance. Finished with a zinc coating to resist corrosion and enhance longevity