Pololu Universal Aluminum Mounting Hub for 6mm Shaft, #4-40 Holes (2-Pack)

These universal mounting hubs are designed to work with most 6 mm shafts, including round shafts and “D” shafts. Each hub has six mounting holes for 4-40 screws (not included), letting you mount custom wheels or mechanisms to your motors. 4-40 hex set screws (two included for each hub) allow secure coupling of shaft to hub. A 0.05" hex wrench (often the smallest size in SAE Allen wrench sets) is included for use with the set screws.

The picture to the right shows a hub with Pololu’s 19:1 metal gearmotor 37Dx52L mm and a Pololu 37D mm metal gearmotor bracket. This hub will work with any of our 37D mm metal gearmotors.