Originally Posted by
Bill Kapaun
Since the lock nut is on the end, you don't need a thin wrench. (with the wheel removed).
This ^^.
Here's a possible exception. Nexus hubs have a 17mm nut on the non-drive side, which is amenable to a normal ("thick") wrench especially with the wheel out of the frame. However, with a roller brake module in place, and the wheel in the frame, only a cone wrench will fit. The nut has to be tightened *after* the brake module's torque link is attached to the chainstay, which has to be done after the wheel is positioned for proper chain tension. I suppose the nut could be left a bit loose, as it's not actually locking the NDS cone, but I like it to be tight. A 17mm Park wrench is ideal for this.