Abstract: A locknut including an annular locknut body having a threaded inner surface and an outer surface, a locknut shroud rotatably mounted on the locknut body and having an inner surface facing the outer surface of the locknut body, an annular ridge on the outer surface of the locknut body defining a first shoulder, a second shoulder within the annular shroud, an O-ring mounted on an inclined surface of the locknut body and bearing against an inclined surface on the annular shroud to force the first and second shoulders into abutting engagement, an annular space between the inner surface of the annular shroud and the outer surface of the locknut body, and a plurality of lobes on the outer surface of the locknut body and located in the annular space for receiving a mating key.

Abstract: A lock arrangement for a vehicle spare wheel hoist and storage construction including a lock member mounted on the input shaft of a winch and having a curvilinear groove therein, an elongated plastic tube having one end mounted on the lock member by a spring clip and the other end extending through an aperture in the frame of the vehicle, and an elongated shaft having a key mounted therein for insertion through the elongated plastic tube and into mating engagement with the curvilinear groove for turning the input shaft of the winch.