The know has been saturated in BLO.
Overly complicated but I need one setup to both clamp an iron frame to wood and hold the knob.
The thread-sert will be glued into the wood base.
The brass washer clamps the iron via a ¼”/20 shaft. It is tightened with a 7mm wrench (I don’t have a english wrench that small).
The other end of the shaft is threaded #12/20 so I can use a Stanley brass nut.