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
200pcs) DIN 6926 M8 Self-Locking Hexagon Flange Nuts with Serration A4 Stainless Steel, Ships Free in USA by Aspen Fasteners, ASSP692648: Amazon.com: Industrial & Scientific
ReliaBot 100mm T8 T8x4 Tr8x4 Lead Screw and Brass Nut (Acme Thread, 2mm Pitch, 2 Start, 4mm Lead) for 3D Printer and CNC Machine Z Axis: Amazon.com: Industrial & Scientific
Amazon.com: Haobase 5pcs M6 X 32 mm Female Threaded 7 Lobes Through Hole Set-Up Knob Grip Black : Industrial & Scientific