Quote Originally Posted by lagonda51 View Post
When reffering to a metric bolt or nut, the diameter is the first diamension stated ( M10) then the pitch, not TPI we are talking metric not imperial, (X2) this is the distance from tip of thread to next tip, then the length, ( x50), simply M10 X 2 x50. Hope this helps, lagonda51.
Lagonda51, if you are still about, are you sure TYG000250 is a pitch 2 bolt at M10? All my enquiries, to date, indicate 1.5 is an automotive sizing.

Kev