键装凸轮 Deyed-on cam

带凸头的键 gib-head key

米制12键槽凸缘螺钉 Metric 12-spline flange screws

花键滑动凸缘 splined sliding flange

喷油泵凸轮轴键槽 fuel injection pump camshaft slot

凸轮轴键槽 Camshaft Key Seat

按键打凸式触感型 Tactile membrane switch