I've just cut down a Nitto Technomic stem that was too long for a headtube on a 53cm frame with the bars set fairly low. Problem is, the expander bolt is only threaded the last few cm, so if I cut it to match the reduced stem length, I will cut off the threaded section. Fortuitously, it happens the Nitto expander uses a standard M8 x 1.25 thread and I've found a net site that sells stainless M8 x 1.25 socket head cap screws as long as 140mm, which should be sufficient. I will probably order one or two, but if these will work for most European and Japanese stems, I may order several more. Does anyone know if the M8 x 1.25 thread is common to all major European and Japanese stem expanders? Or does it vary from brand to brand? I imagine the older UK stems are probably English thread.
Regards,
Jerry Moos