The thermocouple connects to the gas valve with either two electrical type connectors or a threaded nut. From your description of the gas problem, I suspect that the thermocouple is'nt the cause. It sounds like the gas valve is stuck in the open postion.
Tappan company stopped manufacturing home appliances years ago, so parts from them are no longer available. You can still take parts to a local gas appliance servicer to match them. The parts continue to be used in appliances.
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