This item can help connect the NATO rail device to the camera cage or other accessories with 1/4 thread holes. 

 

The adapter features multiple 1/4-20 mounting screw holes for attaching accessories such as rod clamps , nato rails, phone mounts clip, and cold shoe brackets. 
Quickly fix and adjust the nato clamp by turning a hand-operated wingnut, aluminum material, lightweight and durable. (30g weight)