Fixed gear conversion - hub spacers I am converting my 80s steel peugeot to a fixed gear. I have purchased most of the parts an had a wheel built onto a SS hub.

Now, SS hubs are narrower than road hubs - 120mm vs 130mm (although I think my bike is 126mm as it was a 6-speed). The axle on my new hub is plenty long enough to span the rear fork but the hub itself is too narrow.

I've been to a local chain bike shop to see if they stock dedicated spacers but they can't help. I essentially need 2 3mm spacers to bridge fill the extra width.

What's the best way to sort this? I can try a LBS but would a 3mm nut that screws onto the axle suffice? If I can find such a thing...
You can just spring in the dropouts. Its only 3mm on each side, a steel frame will easily bend that much. Just put the wheel in place, then tighten up the nuts on each side.