Not sure what you have there...
Generally a bolt-on hub will have a solid axle that extends through both dropouts, with a nut on each end (which are tightened against the outside of the dropouts). A quick-releae (QR) hub has a hollow axle that extends only partially into the dropouts, with a skewer (rod) that extends completely through the axle & dropouts, & is tightened with the lever on one end. I'm guess I'm not familiar with a bolt-on hub that can be converted to QR without replacing the axle.