Abstract: An adjustable nut wrench comprising a handle section and a slide guided element that is pushed by a spring to a position where abutment surfaces are paralleled to two or three nut's sides. A first embodiment of the wrench comprises two paralleled abutment surfaces which set by the angle of maximal 60 degrees to a direction of the sliding element movement. A second embodiment of the wrench has three abutment surfaces located by the angle of 60 degrees to each other and one of them is sliding.

Abstract: An adjustable nut wrench comprising a handle section and a slide guided element that is pushed by a lever or a spring to a position where abutment surfaces are parallel to two or three of the nut's sides. A preferred embodiment of the wrench comprises two parallel abutment surfaces which are set to a maximum angle of 60 degrees to the direction of the sliding element movement. Another embodiment of the wrench has three abutment surfaces separated by an angle of 60 degrees to one another where one of them is sliding. In further embodiments of the wrench the same method, using a moving sloping abutment surface for a jaw locking, is used.