Inapt. The word you were looking for viridian is inapt: not suitable or appropriate. Inept means clumsy. As in your command of language is inept. Like that.
Tacoma Screw, if you happened to have grown up in Tacoma, is a pretty darn apt name- both suitable and appropriate.
parrotbee if your machinist can't tap 25 threads per inch find yourself another machinist. Not that you will need one. Nobody machines a nut like this anyway. They are all standard parts. You just need to match up your threads and diameter with the type of nut you want to use.
https://www.boltdepot.com/fastener-information/Nuts-Washers/Default.aspx
Or you could just take the whole thing to Tacoma Screw. I bet they have what you need just sitting there and for a buck fifty, if that.
Tacoma Screw, if you happened to have grown up in Tacoma, is a pretty darn apt name- both suitable and appropriate.
parrotbee if your machinist can't tap 25 threads per inch find yourself another machinist. Not that you will need one. Nobody machines a nut like this anyway. They are all standard parts. You just need to match up your threads and diameter with the type of nut you want to use.
https://www.boltdepot.com/fastener-information/Nuts-Washers/Default.aspx
Or you could just take the whole thing to Tacoma Screw. I bet they have what you need just sitting there and for a buck fifty, if that.