Originally Posted by
Winfried
I measured the Tern bolts, and they're actually 5,80mm.
According to some Brompton user, they're "M5, ISO 0.8mm". I have no idea what that means.
So, is it OK to force-use 6mm bolts?
M5 is the size of the bolt .. .8mm is the thread pitch.. .50mm would be finer (more threads /inch) 1.25mm would be coarser (less threads/inch) .. definitely not ok to try to force 6mm bolts... you should have someone with some experience look at your project..