(This is the pin located on the semi trailer which sits in the fifth wheel when a semi-trailer is coupled to the cab unit)
Either the headpin or the 5-pin. Varies regionally.
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.
Either the first or fifth pin, depending upon which region of the country one is in.
The bolt that holds the hanger and base plate together.
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.
bolt that provides a steering joint in a motor vehicle
the front bowling pin in the triangular arrangement of ten pins
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 In newer cars the kingpin has been replaced by ball joints.
Small hardened shaft that connects the stub axle to the remainder of the suspension but acts as the pivot about which it turns during steering.
A device which allows the front wheel of a car to swivel about a near vertical axis.
Strictly speaking, the 5-pin, because its action is usually the key to knocking down more pins; occasionally used to refer to the 1-pin.
The axle that holds the fastening to the caster body and allows the unit to swivel.
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.
Pin around which a steer axle's wheels pivot.
Anchor pin at the center of a semitrailer's upper coupler which is captured by the locking jaws of a tractor's fifth wheel to attach the tractor to the semitrailer.
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.