I'm picking up a few additional tools for my build and bought a RIVNUT set that came with the following mandrel nose piece sets:
1/4-20
10-24
5/16-18
M5
M6
M8
Are there any other sizes that I should consider having in the tool box? I likely won't use the metric ones at all, but was considering picking up an 8-32 and 3/8-16 as well.