2026-08-12
064307
Kingpin on Semi-Trailer Mounting Plate
Close-up view of a kingpin attached to a mounting plate on a semi-trailer.
The kingpin is mounted on the fifth-wheel coupling plate of a semi-trailer and ensures the connection between the tractor and the trailer. This component is crucial for the stability and safety of the entire vehicle configuration. Photo by © Horst Bingemer on shutterstock.com.