a mounting structure for levers and the like such as in a reflex camera mirror box includes a metal base plate which may be the wall of the box and one or more tongues stamped from and bent outwardly perpendicular to the base plate and a synthetic organic polymeric resin having low friction and low light reflectivity properties molded to integrally form a layer on the base plate inside face , portions to fill the openings in the plate left by the tongues and externally cylindrical sheaths at least partially enveloping the tongues and functioning as reinforcing cores and defining projections which serve as pivots for swingably supporting levers , as lever stop abutments or for other functions . where a projection is exposed to little stress , the core tongue may be omitted and by providing recesses in a tongue circumferential surface , the connection of the sheath to the plate covering resin layer may be omitted .