I have stripped the head of my newly acquired (but not new) mini mill to fit a new bearing that I was given with the mill. While it was in bits I have taken the opportunity to clean and inspect the other bearings. On reassembly my collection of pointed objects, bent rods, fine nose pliers was defeated by an adjustment nut in a recess. So I made a special tool.
First take some bits from the scrap pile.

Cut them to size

Drill eight holes, tap two of them (not strictly necessary for this application but I thought it might be useful in the future).

Cut the heads off a couple of bolts to make them fit in the lathe easier and turn the ends down to 5mm. Assemble with nuts and bolts. The double lock nuts are to make the pins stiffer in the recess.

The tool and the nut it was made for.

It works very nicely.

Russell