Product Details:
| Thread Size | All sizes |
| Material | Mild Steel |
| Finish | Zinc Plated |
A castle nut is a hexagonal fastener with a slotted, cylindrical, turret-like top that resembles a castle tower. It is used in, automotive, aviation, and machinery applications to prevent loosening under high vibration. The nut is secured using a cotter pin, R-clip, or safety wire, which passes through the slots and a hole in the bolt or axle.