Another category is the towing pintle used on military vehicles worldwide.
From the en.wikipedia.org
First depiction of a pintle-and gudgeon rudder on church carvings dating to around 1180.
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This photograph gives an excellent view of the elevation mechanism and the center-pintle carriage.
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The front pintle carriage pivoted at the front of the chassis.
From the en.wikipedia.org
A lunette ring is a type of trailer hitch that works in combination with a pintle hook on the tow vehicle.
From the en.wikipedia.org
Tripod and pintle mounts are usually used with spade grips.
From the en.wikipedia.org
It also features an improved roller on the pintle to prevent excessive and premature wear to the mount assembly.
From the en.wikipedia.org
Also, note the spade grips and pintle mount.
From the en.wikipedia.org
Historically, the radical concept of the medieval pintle-and-gudgeon rudder did not come as a single invention into being.
From the en.wikipedia.org
More examples
A pin or bolt forming the pivot of a hinge
The penis; A pin or bolt, usually vertical, which acts as a pivot for a hinge or a rudder; An iron pin used to control recoil of a cannon or around which a gun carriage revolves
(Pintles) The metal hooks by which rudders are attached to the gudgeon sockets.
(Pintles) Vertical pins that serve to hinge the rudder to the vessel and allow it to swing left and right.
A pin used to attach a stern mounted rudder. The hole that the pin fits is known as a gudgeon.
A flexible mounting where the gun is mounted at the top of a vertical post or rod.
An upright metal pivot pin about which a carriage swivels.
(pin-tull, not "pint-ley") technically, a pin or bolt that supports something that turns, as in a socket (gudgeon), however, this strong but simple coupling, which may be locked or rotated, is most often used to directly mount an automatic weapon onto a monopod/monopode stanchion, or to connect ...
A small steel pin or stud that engages the rocker in an expansion bearing, permitting rotation, transferring shear, and preventing translation