A track assembly for a shelving system is disclosed that includes at least two tracks. The tracks are configured to slide relative to each other in an overlapping manner. Each track has one or more fastener holes along a longitudinal length of the track and one or more portions protruding outwardly from the track. The one or more protruding portions defining one or more recessed portions on an opposite side of the track, such that at least one protruding portion of one track is configured to be slidably engageable within at least one recessed portion of the other track when the corresponding overlapping fastener holes are aligned. The slidable engagement of the one or more protruding portions of one track within the one or more recessed portions of the other track may thus indicate that the tracks have been slidably positioned relative to each other with their overlapping fastener holes aligned.