sorry for the delay in replying; took me a while to dig out the details pantsdown

The bolts I used were -

M3 X 35 A2 Stainless Steel Allen/Socket head bolts

I initially tried 30mm but these were too short for my lenses.

I got mine from 'Bolt Base' in Alloa - but it was a few years back.

I have used 'Kayfast' on eBay who are usually very good at posting out quickly; see link -

M3 x 35

I know there is some debate over the thread pattern - all I can say is that mine fitted perfectly, but they were new lenses/bases.

It's only a couple of £££'s to try so worth a punt to stave off the rust.... thumbs

James

Aero8 , Series 1 - Boston Green
Mercedes EQC 400 AMG
Smart Brabus Convertible
Honda Monkey Z125