Is this nut on backwards?

The long manifolds move with temperature changes, grow when hot and the torque spec is very important as it allows the manifolds to slide on the gasket (thats why its a 1 piece gasket). In order to keep this rather loose torque spec nut on, it has to have some sort of mechanical retention (as opposed to normal bolt stretch) or it would vibrate loose and lose its spec. The spec on the AL intake was a pitiful 10 ft/lbs! The wedge of the tapered end of the nut in the concave washer accomplished this retention.