Originally Posted by Dan Burkhart

I'm sure you already know this, but just to be sure, you do know lock rings are left hand thread, right? I'm having a hard time telling from the photo if the hub is stepped down to the smaller diameter of lock ring threads.

Originally Posted by dsbrantjr

Best solution would be to try and find a replacement lock ring.

Originally Posted by 79pmooney

I bought a Primato flip-fop hub (both sides fixed) an had thread issues from day one. Not enough threads. It was also the standard (ISO?) threading, Previous Miches I've used (4 or 5) had the larger diameter lockring threading used by only a few companies. (I've had 2 bell shaped 12-tooth lockrings cut to the Miche diameter. And yes, literally cut. On a lathe with a cutting tool, not a tap.)

I wonder if your lockring should be an ISO and you've got a larger diametered Miche standard. (Miche makes both so the name Miche on it won't tell you. Might see if another lockring threads on easily.