I could not find an acceptable 3D printable rivet, fastener for my Crocs' strap so I decided to make my own.
Printed in PETG with 0.10mm layer height, no support. Please enable sequential printing at Print settings - Output options - Complete individual objects if you plan to print more than one at the same time. You need a pair to make it work ;-).
A pair of these fasteners is printed in under 15 minutes.
Attached STL model parameters:
These parameters and a few others can be easily adjusted in the source OpenSCAD file.
I hope you'll find it useful!
The author hasn't provided the model origin yet.