Release your hand, it works fine. Common thermocouple Head with M6 0.75 thread, end connection: M8 x 1. 1 x Thermocouple. Install the thermocouple tip on the plate and fix its position with two nuts.
The Thermocouple Installation Gas Heater Thermocouple Outdoor Heater Thermocouple would be best suited in outdoor areas, requiring heating and temperature control.