Bolt almost M16

I have an old rotary clothesline, rescued from the bin and been misusing it upside-down as a stand for my antenna. It was already old when I found it. The part where the arm come together was clamped on to the center tube with handscrews. Probably there once were M16. Due to age and evaporation of the plastic, the thread has schrunk. Also the screw has become brittle, the crown already has broken off. I still can get M16 in but I need pliers to do that. The screw I got out has a pitch of 1.75 instead of 2mm.
This design is to replace that screw.

Although I've printed thread before I have not printed this design yet.
I am going to print it when I'm back in the office on a !UP Mini (1) as thats the easiest way.
Setting up the Ultimaker needs too much efford.