Riveter for rivet nuts suitable for Num 3,4,5,6,8.
Flat bar 20x3mm
Bolts/long nuts M12x1.75mm (If I remake it I will use M12x1.25mm)
Small pieces of left over steel
I havenít a lathe so I made the needed fittings using the same way
that I had made the threaded insert for my angle grinder.
Place/secure a piece of steel 30x30mm at my drill press
Make an M12x1.75 threat
And using the threat makes the needed fittings.