Screw head protruding from back of shutter

[Laurent]

I have a good address in France for small hardware (sub-millimeter screws, different materials), but I'd need to figure out which size it is.

[mark]

Lens mounted and ready to play with.

That little screw is a real booger. Super tiny. I dropped it and spent 15 minutes looking for it.

[DWThomas]

A hobby shop specializing in scale model railroad gear might be a better source of small screws than regular hardware stores. The latter tend to think #4 screws are small.

DaveT

[ic-racer]

Make sure the threads don't extend too far into the lens. The diaphragm elements of black Copal #1 shutters can be damaged by a 'too long' screw. On the Copal #1, you can see the diaphragm element move through the hole.

I had to fix one like this once: http://www.largeformatphotography.in...4&postcount=34

[Barry S]

Those anti-rotation screws don't look like any stock screw I've seen. I just pulled one off a Copal 3 and it's a slotted non-tapered pin with a short bit of threading at the end. I don't think I'd go substituting a random screw. Maybe MPEX or Badger keeps spares in stock.

[keithwms]

Mark, send your screw to Laurent!

[mark]

Sure

Send me your address Laurent

[Laurent]

If you do not need it, and if France is not too far away from you!
I'll send you a PM.

Many thanks to Keith for the idea and Mark for the offer !