XA-3542-M
Secondary Lock Handle
SAF-Holland

The secondary lock-handling assembly provides a robust manual-control mechanism for securing the kingpin interface in conjunction with the primary lock. This component serves as an essential safety feature, enabling operator verification and manual engagement in scenarios where automated systems may require hand assistance or redundancy. In the broader context of the fifth-wheel locking system, this handle integrates with standard locking hardware to ensure a secure, positive latch that resists inadvertent release during transit. The category context (42784) places it among auxiliary safety hardware dedicated to locking and secondary mechanisms, while the VMRS code 059-001-043 identifies it as a specific locking-hardware subassembly within the broader fifth-wheel category. Practical applications include maintenance tests, field servicing, and scenarios where manual confirmation of engagement is preferred or required by fleet safety policies. The part’s presence in the safety critical path underscores its importance to overall trailer safety and reliability.