Fan Clutch thread size ?

[XWrench3]

so does anyone know what size and pitch the tread is where you would screw on a cooling fan clutch?

 

[LibertyTC]

What year is your Jeep? Could I please ask that you add the year of your Jeep to your signature line Please-Thanks
According to fiche the Mopar Part Number is: 06034860
Size is mentioned :
312-18x.625
https://www.factorychryslerparts.co...ing-312-18x625-Mounting/4343043/06034860.html