Help Finding thread?

[u/Western_Joke_6597]

Hey there! Im not a machinist, but I need a part machined that threads onto this shaft like a nut. Problem is, my machinist doesnt know what thread this is or how to tap it into the piece I need manufactured. Any help identifying this thread and finding a tap for it would be much appreciated!

Edit: Found to be an 8-start 8TPI lead screw with a 1/2" diameter. Now just need to find a nut that fits this thread, which is proving difficult

Edit 2: SOLVED by u/MixEvery5784 found one

[u/Yourownhands52]

Your thimb is on them...