Technical 59A oil drain plug

What are the threads on a 59A Flathead oil drain plug?

 

BIG!

Dave

 

Do you have the big plug (like 2 inch), or the smaller plug (like 1 inch)? I can probably measure one tomorrow for you.

 

Sort of related, anyone know where to get replacement gaskets for the drain plug?

 

Sorry to continue the derailing of the thread (no pun intended)… Third gen auto has the fiber and copper kind.

 

Thank you!

 

That is where I got mine, and I had the large truck pan plug.