Abstract: A washer has a body having an axis and provided with a first face surface located at one axial side and adapted to cooperate with a nut, a second face surface located at an opposite axial side and adapted to cooperate with an object to be assembled or disassembled, and at least one additional turning resistant surface adapted to cooperate with a bolt, the additional turning resistant surface of the body being formed as a frictional surface providing a friction between the body and the bolt to frictionally impede the bolt from turning and at the same to allow the bolt to be displaced in an axial direction when the nut is turned, the second face surface of the body being formed to provide a friction between the body and the object and therefore to impede the body from turning, and the first face surface of the body being formed with a smaller frictional characteristic than the second face surface of the body to at least reduce dragging of the body into turning by the turning nut; and a fastener is provided with

Abstract: A washer has a body having an axis and provided with a first bearing face surface located at one axial side and adapted to cooperate with a nut, a second bearing face surface located at an opposite axial side and adapted to cooperate with an object, at least one third turning resistant surface adapted to cooperate with a thread of the bolt, the body having at least one resistive point arranged so that when the nut is turned and turns the bolt the body of the washer stops the bolt from turning and thereby the nut creates a pull on the bolt which elongates the bolt in an axial direction and applies to the body of the washer an axial force which overcomes the at least one resistive point so that a portion of the body of the washer is allowed to be pulled axially when the bolt elongates.

Abstract: A modular display system of interlocking components, and more particularly, a modular cubic display frame, comprising two sets of four mitered frame members, the two sets defining opposing rectangular end planes, and a set of longitudinal frame members extending perpendicularly between the corners of the two end planes. The end and the longitudinal frame members are interconnected at each corner utilizing a threaded bolt or screw having a lipped head. The lip projecting from the head engages a corresponding groove formed in the outer surfaces of the mitered corners of the end frame members, while the externally-threaded shaft of the screw engages an internally-threaded bore in the end of the longitudinal frame member. All of the frame members have longitudinal channels formed along each side and one corner, for attaching two modular display frames to each other, or for attaching a variety of auxiliary devices to a display frame.