I'd try a local auto machine shop.
I had excellent luck finding a metric plumbing fitting for my drain plug.
The previous owner thought it was a good idea to put a 13mm bolt in a hole designed for a 12mm plumbing fitting.
Luckily, he didn't bugger the threads.
I had excellent luck finding a metric plumbing fitting for my drain plug.
The previous owner thought it was a good idea to put a 13mm bolt in a hole designed for a 12mm plumbing fitting.
Luckily, he didn't bugger the threads.