Warbird Information Exchange

Hi

Are the prop socket sizes on Hamilton Standard hubs the same for different types of prop? I appreciate different planes had different hubs and props but are they, in theory interchangeable? Could anybody tell me what the diameter of a P51 four blade hub is where the blade fits into the hub please? it's this measurement that i'm wondering stays the same from type to type.

Thanks

D-Shank blades all have the same shank style/design, but I'm not sure if the 2D30, 12D40, or 24D50 would all have the same diameter with the exact same blades. I'm curious as well!