Pivot bearing

In a window stay for the adjusted mounting of a sash in a window frame, said stay having at least first and second metal components pivotally coupled together by a pivot bearing, said pivot bearing comprising a hollow annular boss formed as an integral part of the said first component by being drawn from the base material thereof such that the hollow annular boss has a cross-sectional wall thickness which is less than the thickness of the base material from which it is drawn, said annular boss having a free end disposed a distance from the surface of the first component from which the boss extends and further having inner and outer wall surfaces, said outer wall surface at least in part forming a bearing surface, an opening extending through said second component and being defined at least in part by a peripheral wall surface, said annular boss being located within said opening such that the bearing surface thereof is engaged with the peripheral wall surface of the opening whereby the annular boss is rotatable within said opening, the free end portion of the boss being pressed over such that the cross-sectional area of the free end is greater than the opening thereby retaining the second component on said annular boss, and a wear resistant plastics bushing comprising a sleeve having a flange positioned within said bearing, the sleve being located between the bearing surface of the outer wall of the annular boss and the peripheral wall surface of the opening and the flange between the first and second components, said bushing being under sufficient pressure by the coupling of the components to create a required level of friction within the bearing.