Are B-Hubs Bonding?

[Simpuller]

Is a BHub bonding?
I have a Nema 3R breaker enclosure that's going to be my primary disconnect.
It's a Q23225NRB, RB suffix for B-Hub connection of my service mast.
Cut sheets are attached.
It seems that as this panel is suitable for service entrance equipment and its expected connection is BHub, that BHubs would be bonding.
The top entry is sized for max 2-1/2 in, so what would anybody do for bonding hub sizes other than 2-1/2 in.
Any thoughts?

 

[LarryFine]

I say yes. When I nipple a W/P panel under a meter, the nipple is considered bonded by the OEM bolt-on hub.

 

[Buck Parrish]

If it's bolted to the top of the panel than it is bonded. So is the rigid conduit screwed into it. Nothing else needed.

 

[Simpuller]

Thanks folks. I thought so, but couldn't find it in the cut sheets.
You'd think they would say it's bonding any chance they got.