2002 Bulldog axle bolt

[Hey Chief]

I need to know the size of the Axle bolt/nut. Fastenal company said bolt is M20-1.5 and locking hex nut is
M18-2.5? Does anyone know the correct answer? Thanks!!

 

[Jersey Big Mike]

I need to know the size of the Axle bolt/nut. Fastenal company said bolt is M20-1.5 and locking hex nut is
M18-2.5? Does anyone know the correct answer? Thanks!!

Get a micrometer and measure it if you have one currently.
That sounds like a very odd combo..
Is the threaded section visibly smaller that the rest of the axle?

 

[CHIEF DOC]

I need to know the size of the Axle bolt/nut. Fastenal company said bolt is M20-1.5 and locking hex nut is
M18-2.5? Does anyone know the correct answer? Thanks!!

The stock axle is not metric at all.

3/4" axle is more likely with a 5/8X11tpi nut.

Unless some one installed a metric wheel. hub & axle at some point.

file:///C:/Users/USER/Downloads/bigdog%20vintage%20O&M-1.pdf