magnetic screw (big 20mm thread)

Funny refrigerator magnet, made as a big bolt with a just as big nut to match. 37mm in outer size and 20x2.5mm threads.
nut needs to be printet at 102% size, for a tight fit on my printer 103% for regular little loose.

the big magnet hole is made for at motormagnet from an old hub motor(very strong) and a version with a holde for a regular 10x3mm magnet.
 

Printer: Anycubic kobra 2 neo
material: CCtree pla-st
temperature: 195C
speed: 150mm/s (go for your standard settings)