The kingpin is the part of the trailer that attaches to the fifth-wheel hitch. As part of the upper fifth-wheel coupler, the kingpin engages with the jaws of the fifth-wheel and holds the trailer firmly in place while letting the trailer turn freely.
the front wheels of most modern vehicles swivel around two ball joints, but on older vehicles, such as those equipped with older beam suspensions, they swivelled around bushes mounted on a shaft. The shaft is called a kingpin.
For a front axle assembly, the kingpin is a pin that connects the front axle and steering knuckles, about which the knuckles pivot. For semi-trailers, the kingpin is the pin that is locked into the fifth wheel on the pickup bed to couple the trailer with the towing vehicle.
A hardened steel pin that is passed through the steering knuckle and axle end. The steering knuckle pivots about the kingpin. A vertical or inclined shaft about which a steered wheel pivots. In newer cars the kingpin has been replaced by ball joints.
The joint which connects the spindle to the frame. The positioning of the kingpin in the frame affects caster and camber. This position is adjustable in some frames. For a discussion of these terms, see this wonderful document on Pete Muller's karting website.
Attaching pin on a semi trailer that mates with and pivots within the lower coupler of a truck tractor or converter dolly while coupling the two units together. A retaining device used to connect container to wheels. On rail, a metal rod used to connect the container to "truck housing." On highway, a metal rod in a trailer which connects to the "fifth wheel" of the unit pulling the container
A pin or shaft on which the steering spindle assembly rotates. The pin, mounted through the center of the trailer upper-bolster plate, that mates with the fifth wheel and locks to secure the trailer to the fifth wheel.
The Kingpin (Wilson Fisk) is a fictional character, a Marvel Comics villain who has battled many Marvel crime-fighters, most often The Punisher, Spider-Man, and Daredevil. Created by writer Stan Lee and artist John Romita, Sr., he first appeared in The Amazing Spider-Man #50 (July 1967). He was modeled after Sydney Greenstreet's character in The Maltese Falcon.
Kingpin was an American crime/drama mini-series which debuted on the NBC network in the U.S. and CTV in Canada on February 2, 2003 and lasted 6 episodes. NBC's answer to The Sopranos and also influenced by The Godfather, Macbeth and Traffik, the story was about a Mexican drug trafficker named Miguel Cadena (Yancey Arias) and his family life. It was to be followed by a television series, but low ratings canceled those plans.