Does such a tool exist?

[davec]

And Oldendum hits the point I was just going to make. You reach a min thickness where it will still work, but worth looking into. Start with Mcmaster.com and start digging into flat head fasteners and learn... Mcmaster has it all! Always start there when thinking about oddball fasteners.

[kbeitz]

A dimpling punch and die looks very easy to make...

[schiada96]

I didn't know a micro stop existed. They accept 1/4 x 28 threaded bits and the only ones I found are 100 degree, not 82 degree. That would mean I'm forced to use 100 degree rivets instead of a screw. For this application that would work.

California aircraft tool has 82 degree microstop countersinks and a lot more stuff

[steve45]

I didn't know a micro stop existed. They accept 1/4 x 28 threaded bits and the only ones I found are 100 degree, not 82 degree. That would mean I'm forced to use 100 degree rivets instead of a screw. For this application that would work.

https://www.aftfasteners.com/product...ead-qty-1.html