Motor Shaft Adapters

Motor shaft adapters provide a reliable way to connect wheels, gears or other mechanisms to a wide range of motor outputs. They are offered in common diameters such as 3 mm, 4 mm, 5 mm, 6 mm and 1/4 inch (6.35 mm), and feature either threaded holes (e.g., #4‑40 or M3) or hex shanks that mate with standard RC or scooter wheels. Most units are machined from aluminium for light weight and strength, with some brass variants for added durability. Each adapter includes the appropriate set‑screws and a small Allen key, simplifying installation and ensuring a secure fit. The variety of lengths and shaft‑to‑hex conversions allows easy integration into stepper, DC and hobby‑grade motor assemblies without custom machining.