5 model

Free

High Precision Test - Bolt & Nut v3

Thingiverse

Free

Screws & Nut test/螺絲螺帽測試

Thingiverse

Free

Nut & Bolt Test Print

Thingiverse

Free

Bolt & Nut - Precision Test

Thingiverse

Free

M3 M5 M6 M8 - screw nut - test plate

Thingiverse