Chosen Solution

The repair for my 6s requires removing the 1 hex nut standoff screw. Is it possible/easy to remove this without the exact tool? It seems this tool isn’t included in most tool kits. Thanks!

Some robust tweezers or needle-nose pliers should do the trick, the standoff is not very tightly secured. That said, using anything other than a proper driver could expose you to collateral damage so be extremely careful trying to remove it. If you plan on doing this more than once, you should consider getting a driver before you do the repair.