Need Thunderace axle bolt spec

[rosso75]

Does anybody have a Thunderace rear axle or chain adjusting blocks laying around that you could measure for me, pretty please?  I need to know the diameter of the axle.  I'm trying to decide which direction to go for a rear wheel, and part of the decision hinges on knowing that measurement.  Obviously I don't have one, and I don't want to buy one just to find out it's not going to work.

Thanks

[fudgejerkin1188]

28mm

[rosso75]

Thanks a bunch.