Brass cap bolster Nut
24mm hex nut upper bolster.
Turned embedment Ø 8mm, with a 4mm thread machined into it.
With this you get a nice upper edge and at the same time a locked handle.
All you have to do is machine a 4mm thread into the upper end of the rod to a suitable size and drill an 8mm countersunk hole at the end of the handle.
Brass is quite a soft metal, so this works as the glue's friend.
After assembly, the nut shape can be easily shaped by sanding e.g. into the shape of the Tommi-hela. Nice and a little different when finished just like that.
Nut 24mm - nut height approx. 13.5mm
embedment Ø8mm - length 10mm - inside Ø4mm thread with a depth of 18mm
Total length approx. 23mm