Sorry, I'm still confused. Which part of the piece was already threaded, the smaller one? Did you then thread the wider portion? does the smaller portion screw into the filler? Is that an original Pelican piston filler? Did you change bodies on an existing pen, or get the nib unit alone? Assuming the green bit is a Pelikan piston filler, looks like you would have to have an existing pen to utilize the nib units, or do they have a standard thread?
I guess that's all the œuestions for now :biggrin:
Dan