Head-Shell only one location pin, not two

If Jelco, Audiocraft, and possibly other mfr's headshells have 2 pins then there must be a standard for the thread pitch on the locking collar. Does anyone know what that is? With that information it would be possible to accurately diy a 2nd pin with piano wire or better yet high speed steel drill blank stock.

Ray K
 
Hi, Thanks for that Yes, now after a little more research following your tips. jelco most but not all have two pins & so do Audiocraft, but they seem to have a uniquely non standard) two pin arrangement.

Cheers