Looking for 6mm diameter hex shaft

Pololu sells these nice Universal Aluminum Mounting Hubs for 6mm hex shafts, but I would like to buy the hex shaft itself:

pololu.com/product/1083

Does anybody know where to buy it?

Thank you.

What do you mean by a “hex shaft”?
Those hubs are intended for 6mm round or D shafts.

[quote=“Jim Remington”]What do you mean by a “hex shaft”?
Those hubs are intended for 6mm round or D shafts.[/quote]

Oops, sorry, you’re right! I guess I can’t use them.

But I’m still looking for hex shafts with a 6mm diameter…

Thanks.

Have you tried ServoCity or McMaster-Carr?