Unlikely. Is it shorter or longer? The thread sticks out the other side on my Tripster a couple of mm already anyway and if it's simply more thread on the end, it'll still stop turning when it's tight, there might just be a little more thread inside the hub.
I just measured my thread and it's basically 13mm anyway. Maybe they've measured actual thread on one, whereas on the other they included the gap between full axle diam. and the threaded bit, which adds a mm.
Unlikely. Is it shorter or longer? The thread sticks out the other side on my Tripster a couple of mm already anyway and if it's simply more thread on the end, it'll still stop turning when it's tight, there might just be a little more thread inside the hub.