parametric nuts and bolts —

Founded parametric nuts and bolts models & stl files for printing
SCREW and NUT
Prusa Research
Adaptable Hex Bolt Wrench
3rDesign Works.com
Restraining Bolt
MakerDan
14 Jack NUT
jakned
Screw and nut containers
Dominik_Liskiewicz
Lightning Bolt Easy Quick Print
3DManufacturingHub
Screwsorter
Finium