Champion 3X spark plug question

[Tim/Va.]

Does anyone know the size and pitch thread of the steel nut on the 3X spark plug?

 

[katy]

8-32

 

[JRrev]

Think he means the large nut holding the porcelain insulator to the main part of the sparkplug.

 

[Tim/Va.]

The large nut that hold the insulator to the base.

 

[jw hash]

it is 13/16 and for best results use a six-point socket, 13/16 -24 is the thread size