In the industry, what is used for metal on metal wear points?
Some run dry; some use clock oil. An old quick-and-dirty trick for cleaning and lubricating leaf shutters is allegedly to dissolve 5-10% clock oil in ether; slosh the shutter around in that for a while; drain it; and let it dry. A tiny amount of oil is left: not enough to gum up the blades, but enough to add a little lubricant on the bearings. I'd be grateful if anyone who has actually tried this could say if it works.
I think the current quick-and-dirty method of cleaning a leaf shutter is to flush it with lighter fluid (the "Ronsonol Flush"). It can work with all metal shutters like Compur and Ilex/Acme shutters, but it's bad for older Graflex shutters that have rubber blades, and an absolute disaster for old Compound shutters with paper blades.
What I do for Compur and Ilex shutters is to open them up and remove the speed-setting dial, flush in a container of naphtha (which is the main ingredient in lighter fluid), and use a drop of light oil like sewing machine oil in the slow speed retard mechanism (run the shutter on 1 sec and it's the assembly with the spinning gears), and this will usually keep the shutter running well for a few years. I use a light coating of lithium grease in the channels for the speed setting dial to keep the dial running smoothly and reduce wear in the dial.
The usual lubricant for shutter and aperture blades is graphite powder.
In answer to the original question, I haven't checked lately, but as I recall, there is a range of lubricants for different purposes available at www.micro-tools.com.