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

$9.73

Part Number:  PL-1081
Brand:  Pololu Australia

These universal aluminum mounting hubs allow you to mount custom wheels and mechanisms to 4 mm diameter motor shafts. The set includes two hubs, two #4-40 set screws for securing the hubs to motor shafts, and one 0.05″ Allen wrench for use with the set screws. Each hub has four threaded mounting holes for #4-40 screws (not included).   Dimensional Drawing: https://www.pololu.com/file/0J160/1081-4mm-4-40-hub-dimensions.pdf  
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These universal aluminum mounting hubs allow you to mount custom wheels and mechanisms to 4 mm diameter motor shafts. The set includes two hubs, two #4-40 set screws for securing the hubs to motor shafts, and one 0.05″ Allen wrench for use with the set screws. Each hub has four threaded mounting holes for #4-40 screws (not included).

 

Dimensional Drawing: https://www.pololu.com/file/0J160/1081-4mm-4-40-hub-dimensions.pdf