3 mm shaft coupler

I need a rigid shaft coupler to join the 3 mm shaft of a gear motor and a longer 3 mm shaft that will function as an axle.
The outside diameter of the coupler cannot exceed 3/8 inch. Can someone recommend a supplier for the coupler?



I’d look at smallparts.com and mcmaster.com. I’m not sure how rigid is rigid for you, what shape your shafts are, and how they are supported, but maybe you can get away with just using a few layers of heat shrink.

- Jan

Thanks Jan. Located a supplier out on Long Island had exactly what I needed.

Horus - I’m looking for the exact same thing. Can you tell me where you got yours?