Wheel Axle Question (front Is ¼" And Rear Is ⅜")

[rustyhood]

New to bike builds and I have been posting questions and getting very good advice from you guys and now I have another question. Quick back-story…working on an early 60’s 24” Road Master Saturn. The bike is in need of replacing the 24” wheels and I have posted in the wanted section in hopes of finding something. But as was I tinkering in the garage today I discovered that front wheel axle is ¼” and the rear wheel axle is 3/8”. Now I am really having a hard time as it is in finding affordable wheels but will this make it impossible? Also I am not sure if drop out for the front fork will handle a 3/8” axle. Any thoughts?

 

[rustjunkie]

Also I am not sure if drop out for the front fork will handle a 3/8” axle. Any thoughts?

Either measure it or try putting one side of the rear axle into the front fork from the outside.

 

[GTs58]

Most rear axles are 3/8" and most non heavy duty front axles are 5/16. Never seen a 1/4" axle on any bike, but I haven't seen them all.