Hexagonal Castle Nuts - 1/2"-20 - Zinc Plated - 2-Pack

Hexagonal castle nut engineered for secure fastening in critical assemblies requiring safety wire retention. The precision-cut castellations accommodate cotter pins to prevent accidental loosening in high-vibration environments. Zinc plating delivers superior corrosion resistance for demanding outdoor and industrial applications. Designed for automotive suspension systems, machinery assemblies, and structural connections where reliable retention is essential. Standard hexagonal configuration ensures compatibility with conventional wrenches for efficient installation and maintenance.