first of all I´d like to introduce myself. I´m from germany and got kind of addicted to USSR lenses. Theya all perform very well on my Fuji X-T10. I got into those lenses because I wanted good glass for cheap first, but then I realised theyr artistic character.
My question is the following:
I have some Helios lenses and since yesterday a Zenit FS-12 set with a Tair 3 (idk if S or A or...). I had to clean a Helios lens and at the Tair to repair the diaphragma. Everything was fine and not problem at all. The only trouble I had was with the screws. In both cases they´d broke. And I realised the Helios and the Tair used the same screws.
Does someone know which measures those screws have and where to get them?
Heres a pic in which you can see which screws I mean.
Its these screws and also the ones which are more tiny (dont have a picture right now...)