Amazon.com: Odinest T Nuts Tee Sliding Slot Nuts 20 Series M3 Threaded Slide in Pre-Assembly for 20x20 Aluminum Extrusions Frame with Profile 2020 Sereis 6mm Slot for CNC Router Build Rail 3D
OL 2 Flügelmuttern M4 aus Kunststoff, Schwarz - Flügelmutter mit Gewinde aus legiertem Stahl : Amazon.de: Baumarkt
500pcs) DIN 6926 M5 Self-Locking Hexagon Flange Nuts Without Serration A4 Stainless Steel, Ships Free in USA by Aspen Fasteners, ASSP6926405: Amazon.com: Industrial & Scientific