hmm I think these are like 100GHz + though. I forgot but it was very high for spring fingers I think
I thought of this.
1) big shallow counterbore
2) less shallow less wide counterbore
3) threaded hole
1) solder thin plate across big shallow counterbore, make flush
2) insert screw into threaded hole. The screw should be able to deform the thin plate slightly so it squeezes the diode in place
like a burst disk almost. then its all smooth
so it works like arteries