Mine came without it so here we are. It's a tight fit based on the specs for a 3/4-16 UNF 1A thread, but with a little force they do thread together. I wanted something that wouldn't move easily with every-day handling but could still be adjusted.
Printed in PLA using 0.1 layer height and 0.4 nozzle.
The author marked this model as their own original creation.