Amazon.com: ruthex 1/4" Threaded Inserts - 20 Pieces RX-1/4“-20x12.7 Brass Heat Set Insert for Plastic Parts - Inches knurled Nuts - Insert by Heat into 3D Printing Components : Industrial & Scientific
Gewindeeinsatz M8 Buchse und M12 Stecker 10 Stück geschlitzte Reparaturmutter für Computer, Form für Zuhause,Gewindestange M8 : Amazon.de: Baumarkt
Amazon.com: 4 PCS 34inch Shelving Connectors, Threaded Pole Connectors, Shelving Post Coupler for Extending Wire Rack Shelving, None, Compatible with 34inch Poles : Home & Kitchen