1/4 - 20 Nut Knob

¼ - 20 Nut Knob. I used ASA for a 9/16" lock nut .31" or 8.1mm in height. Nut was a bit tight can scale by a percent or so to get a loose fit. Total height of the know was ~22 mm. Requires zero support. If using a high temp material recommend placing the actual nut in the chamber to raise the temp before to have a better lay of material from the nozzle on the nut. Not required.