An M10x1 is an example. 5. (Coarse) threads have a 1.5mm pitch. M10x1 has a 1.25mm pitch. 25 threads have a pitch of 1.25mm. The thread "M10", for example, indicates a coarse pitch. Any additional pitch callouts, such as M10x1, indicate a coarse pitch. 25 specifies a noncoarse pitch.