GT2 16 Teeth 5mm Timing Pully (6mm width) for stepper with 1 flat surface on the shaft.
It is designed to being milled with CNC.
This model contains a dual option to lock the pully in place.
There are 2 holes for a set screw "DIN 913 - M2,5 x 4" or "DIN 913 - M2,5 x 5"
Teeth dimensions are taken from the web and should be accurate for 2mm pitch belt.
DXF file available for easier dial in on your CNC
GT2 16 Teeth Idler for 3,4 and 5mm bolted connection https://www.thingiverse.com/thing:2616280
Also included a DXF file
GT2 Smooth Idler for 3,4 and 5mm https://www.thingiverse.com/thing:2618509
Although this is designed for CNC, it can be 3D printed.
Keep in mind, if you print this you will need to cut the thread of 2.5mm by hand in the model as it has no other option to guide the set screw.
It is better to use this https://www.thingiverse.com/thing:2615960 for printing, or any other pulley available on Thingiverse
Designed with Inventor 2018
DXF made with Autodesk Mechanical 2018, saved as 2010 version