Crown Locknut – HW-406

This steel locknut is built for Crown lift trucks and uses a self-locking design to resist backing off under the vibration and shock loading typical of forklift operation. Unlike a standard hex nut, a locknut incorporates extra friction or a deformed thread section that grips the mating bolt threads even as the assembly flexes or vibrates during use.

Locknuts see duty anywhere a threaded fastener needs to stay put without a separate lock washer, cotter pin, or thread-locking compound, and they are a common wear item on chassis hardware exposed to repeated jolting. Over time, a locknut's locking feature can wear down through repeated installation and removal cycles, reducing its holding force and making replacement necessary rather than reuse on critical fasteners.

Manufactured for Crown equipment, this steel locknut is a straightforward stocking item for shops maintaining Crown lift trucks that need reliable, vibration-resistant fastening on chassis and hardware assemblies.