Yes, after you mentioned it, I checked around the site. I couldn't find any. And M14 washers are even more rate.

I'm probably better off getting indexing crush washers.

If you have any other source, do let me know.

It's funny. Years ago during college, I used to ride an old bike. Sometimes, when parking in a sketchy spot overnight, my friends and I would pull two spark plugs. Back then, we didn't really think much about the loss of seal. In time, I did install a secret fuel shutoff valve under the gas tank....

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