10-05-2019, 02:52 PM
(This post was last modified: 10-05-2019, 02:56 PM by Ian McGowan.)
I'm working from memory here, I know that it is 14tpi and I believe that it is 1/2" BSP, which would make it something like 20.7mm dia. across the threads of the plug.
I recommend that you get this confirmed by someone else.
I recommend that you get this confirmed by someone else.