Go to a computer repair shop and see if they have any bad power supplies with that switch. I have a couple from the HAPP PowerPro power supplys that went to $h!t that is rated 10A @125v, and have 4 lugs-double pole/double throw, you would only use 2. The hole size would be 3/4 X 7/8 for this one. I could send you one but the packaging might cost more that the actual shipping.
Radio Shack might even have that.