Not really the same....the Westinghouse (which now Cooper still uses) socket are more squared and actually has as many as 4 terinals with spade connections in the bottom of the socket....so its not the same as this one...not even close!
Get a big can of chef boyardee and use the can as the head. Then use paper clips for the latches and use a cfl reflector (those plastic reflectors that retrofit in can lights). Now you have a mini FCO NEMA!!!!