JOST part description

BOLT ASSEMBLY

Features & Benefits

  • Locking bar secures trailer kingpin after coupling, forming a closed connection
  • Subject to mechanical wear, making periodic inspection and replacement advisable
  • Helps prevent unexpected trailer shifts by maintaining kingpin contact
  • Intended for heavy-duty use in fleet and freight applications with frequent trailer swaps

JOST Fifth Wheel Fitting

In case you’re not yet aware, the locking bar on a fifth wheel assembly plays an active role in securing the trailer connection. The JOST Fifth Wheel Fitting includes the locking bar used to engage the trailer kingpin and hold it in position. This component experiences significant mechanical movement during coupling and uncoupling, which may lead to wear or compromised fitment if not periodically replaced. The JOST SK3205-06 helps maintain kingpin engagement during transit to avoid unintended uncoupling or trailer movement.

Product Attributes

Notes Locking Bar

JOST® is a global leader in manufacturing safety-critical components for commercial vehicles. Its products are divided into three categories—vehicle interface, handling solutions, and maneuvering—and are manufactured in its different production sites located in more than 20 countries across five continents. Since it started as a humble forge of ball bearing turntables in 1952, JOST has grown exponentially and has become the leading supplier of landing gears and fifth wheel couplings around the world. Currently, there are five brands under JOST, including ROCKINGER, JOST, TRIDEC, Quicke, and Edbro. All these brands are renowned names in the industry, thanks to their high-quality products and continuous innovation.

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