A load binder including a clamp mechanism for clamping onto container members such side boards of a shipping container. The clamp mechanism includes arms having connecting members adapted to couple to a binding strap, as well as gripping members and a gripping pad adapted to clamp against the container member in response to an urging of connecting members towards one another. The arms and the gripping pad may be pivotal about a common axis. Further enhanced binding action may be achieved via a cam buckle provided with double lining.