Originally Posted by
Agfa001
JohnDThompson Thank you! Yes - that is exactly the diagram I was trying to find
If I try to find one of those newer lock rings with the flats - do I have to make sure it's french thread? or is that a given that it would be
Yes, the thread has to match. Stronglight made the P3 in both metric and English thread. Metric thread may be more difficult to source in North America, alas, but it doesn't have to be a Stronglight piece; any 25 x 1mm headset locknut will suffice.