Making a couple of mid-70s bikes campus ready for my friend's college-age kids. Both asked for mechanical simplicity. Going to single speed and nutted axles from quick-relase for wheel theft protection.

It occurs to me that I should be able to find new replacement axles with cones, maybe. I'd prefer new rather than messing with used ones. I'd like to use nice track nuts as well.

Same Maillard hubs on both wheelsets (different wheels pictured on the Raleigh).

Spacings on both bikes appear to be 91 front, 126 (maybe 120) rear.

Can you point me to a source for replacement axles?

EDIT: I'm concerned about getting the correct length, axle diameter, cone diameter (is that a thing?!?) and spacing if the axle comes with spacers and cones.

Photos to entice readers: