Pivot joints

A friction pivot joint between two components, said joint being of the type in which a first of the components has an opening through which the shank of a headed fastening extends, the tail of said shank extending through an axially aligned opening in the second of the components, the tail of said shank having means to prevent axial movement of said fastening relative to said components, the joint being characterised in that the shank of the fastening extends through a bushing of wear-resistant plastics material located in the opening in the first component, said bushing having integrally formed therewith a peripheral flange, said flange being sandwiched between said first and second components thereby preventing contact between the components, friction in said joint being created from the plastics bushing and integral peripheral flange being placed under pressure by said fastening, said bushing having a length which is greater than the length of the opening in which it is located with the result that during assembly of the joint pressure created by said fastening causes the free end of the bushing to flow under the head of the fastening to be retained thereunder by a concave underside of the head of the fastening, said head and shank of the fastening thereby being prevented from contacting said first component so that during relative pivotal movement of said components substantially no torque is applied to the shank by the head of the fastening.