door striker post info

["Walter Coe" <Whalt@xxxx>]

I finally got around to adjusting the striker pin on my drivers door and
found that someone had put it in cross-threaded. Besides needing a new
striker pin, I might need to replace the "nut" in the door. Can anyone say
what this involves? I'm thinking that I can get away with chasing the
threads if I can find the right size tap. Can anyone say what the correct
size is? I can tell that it is a 1,0 metric thread pitch, but I need to
know the diameter.

Walt Tampa, FL