Does anyone know of a fan control thermo switch that has pipe threads for installation in an intake manifold and a turn on temperature of about 200*F and a turn off temperature of about 190*F? Speedway Motors has one that is close with a turn off temperature of 185*F but that does not seem like a good choice when using a 180* thermostat because there is not enough difference between the thermostat and turn off temperature.

Wells and BWD make switches in the range I'm looking for but they have metric threads, typically M16 x 1.5. My old lathe cuts inch threads but not metric threads.

Thanks!


Ray