ECN Forum Forums General Topics of the Trade General Discussion Area Safer terminals on spec grade duplex?

I noticed on those spec grade back wire devices that there is usually a pair of holes per screwhead. And with a duplex, you would have 4 holes on the neutral, and another 4 holes on the hots. I could connect 4 neutrals and 4 hots, and if I also put wires directly under the screwheads, a total of 6 neutrals and 6 hots. I strongly suspect that this isn't code...