What size and thread pitch for motor mount nut?
 

After installing my longtubes, I noticed that the motor mount nuts were not threading on properly. What is the correct size and thread pitch for factory motor mounts?

Ive got a set in the garage that I just looked at. I do believe its 9/16 x 13. I tried putting a half in. tap on it and it was to small. But I measured the tread pitch and it is 13
Bill

It was 14mm x 2 (pitch)

We found some old stock ones and took them up to the hardware store.

Could be, as I said tried 1/2 tap well actually die and it didn't fit. But with thread pitch gauge 13 fit which is probably pretty close