My axle nuts that came with the On-One large flange track hubs have gone very rusty and look gash.

What specification are they if Im looking for replacements?

I got some “10mm” alloy nuts from CRC and they fit neither (too big on the front axle, too small on the rear)

Does that mean you have 9mm front & 12mm back? i.e. 9mm QR size axle on front and 12mm through axle on the back?

I think its a 9mm front. But cant work out what it is on the back. the 10mm nut wont screw on to the rear axle but its only slightly larger. Maybe its just thread pitch?

I’d get some A4 or A2 stainless so you can do em up well tight
(no idea on sizes needed though)

Halfords to 10mm track nuts (link) which fit ‘normal’ rear axle threads (I forget the pitch).

cheers 3fish.

Im going to get hold of some of those (or the weldtite ones) and see if they fit. 9s on front 10s on back.

Maybe the ones from CRC are “different”.
Id ordered the 10mm ones.
http://www.chainreactioncycles.com/Models.aspx?ModelID=34992

I’ve got some at home, so I’ll check the thread pitch for you when I get back later.

The Halfords track nuts are 10mm x 1.0mm pitch. You can easily measure the rear axle width/pitch to confirm.