On Sep 16, 8:32 am, LeonNick wrote:
I have a piece of 3/16" rod aluminum,what is the closest size threading
die I can use. Is 10-32 allright?

10-32UNF is fine on 3/16" dia. rod.

The theoretical O.D. is .190". Actual male thread O.D. is always a
few thou smaller than the nominal diameter.

Wolfgang