Haha, love it. Bend and snap.
Thanks for all your replies.
It was a metric size and I managed to get a small length for £1. I have had to leave it with an engineer though as I have no bench drill and was advised not to try and drill it with a hand drill.
Also what is the best bonding to use for attaching the bellows before they are also screwed in place. What was there seems rubbery and also a blue colour. I was going to use a small amount of silicone as the bonding is just to give it a tight seal but thought I would ask before I do.
The camera is in worse condition than I originally thought it was. It's all stripped down now and have found a couple of things that are hidden from view that need repairing.
I'm enjoying refurbishing it though and also giving it the look that I like. I'm replacing the leatherette with paint which I think looks better and also gives you access to the screws that are usually hidden by the leatherette.