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Pololu Universal Aluminum Mounting Hub for 3mm Shaft, #4-40 Holes (2-Pack)

Pololu item #: 1078
Brand: Pololu	supply outlook
Status: Active and Preferred

Free shipping in USA over $100

Price break	Unit price (US$)
1	7.49
5	6.89
25	6.34

Quantity:
backorders allowed

These universal aluminum mounting hubs allow you to mount custom wheels and mechanisms to 3 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).

We have an assortment of universal mounting hubs available, spanning several shaft sizes and featuring mounting holes threaded for metric or imperial screws:

Alternatives available with variations in these parameter(s): shaft diameter mounting hole size Select variant…

Compare all products in Pololu Universal Mounting Hubs.

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Dimensions

Size:	17.5 mm diameter × 5 mm thick
Weight:	2.8 g¹
Shaft diameter:	3 mm
Mounting hole size:	#4-40²

Notes:

1: For a single hub only (without set screw).
2: This is also the size of the set screw.

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