Amazon.com: Nut for Motor Scooter, Scooter Nuts Work More Safely with Gasket for M365 PRO Electric Scooter Replacement for Front Driving Wheel of Electric Scooter : 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