Does anyone know what sort of pinch bolt is supposed to be used with this collar? Because it has no recess I could use any old bolt but what’s the neat ‘correct’ solution? The hole is 5.8mm with new powdercoat everywhere so presumably really 6mm.
I don't know about correct, but neat would be a button head screw (Torx ideally, but Allen key if you must) into a Nylock nut. That gets you nice rounded no-snag surfaces both ends as long as the screw doesn't project past the nut.
Does anyone know what sort of pinch bolt is supposed to be used with this collar? Because it has no recess I could use any old bolt but what’s the neat ‘correct’ solution? The hole is 5.8mm with new powdercoat everywhere so presumably really 6mm.