Universal Aluminum Mounting Hub for 5mm Shaft Pair
 

The Pololu universal aluminum mounting hub allows you to mount custom wheels and mechanisms to 5 mm motor shafts.
The hubs are sold in pairs. The set includes one Allen wrench and two 4-40 set screws for securing the hubs to motor shafts.
Each hub has four mounting holes for 4-40 screws (not included).
 

These universal mounting hubs are designed to work with most 5 mm shafts,
including round shafts such as those on our stepper motors and “D” shafts.
Each hub has four mounting holes for 4-40 screws (not included),
letting you mount custom wheels or mechanisms to your motors.
4-40 hex set screws (one 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
 

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