[crazyfool]

For bolt on hubs does it mean that it is thru axle?

 

[Stoked]

Not necessarily. I think of female axle hubs when I hear bolt on.

 

[ServeEm]

^^^ good point.

OP could you give us an example of a make and model where you seen this. I still think of a traditional male axle with nuts too as bolt on. Female tho is more spot on.

 

[Cru Jones]

I still think of a traditional male axle with nuts too as bolt on.

Same. I definitely have never heard a thru axle called bolt on.

 

[w00dy]

bolt on usually means solid axle with nuts.