Size of caster bolt threads

[birdchaser]

Building own cart for #1. Will post pic's after done. What size are the threads where casters thread onto? Gotta coffee can of bolts. Seems like a tweener. Metric? Thanks for any replies.

 

[old sarge]

I don't have a thread gauge but if you have a hardware store nearby they should be able to help.

 

[Lonzinomaker]

There are metric. I had to take a caster into a bolt/fastener supply house to  get some for my build. Sorry, can't remember the size.

 

[birdchaser]

Thanks for all replies.  10 mm 22 thread.  After taking caster into hardware store and look for a nut that will thread on. GOTTER DONE! Don't need a supply house :