A vehicle seat bottom comprises a seat cushion support pan including first and second arms respectively coupled to first and second lateral brackets of a seat bottom support frame by a pair of first and second fastening devices that extend in opposing transverse directions from the first and second lateral brackets. Each of the arms of the seat cushion support pan includes a ramped portion at a distal end thereof extending to a slot. Each of the fastening devices includes a transverse neck terminating in a head. In assembly, the heads of the first and second fastening devices snap through the slots in the first and second arms of the seat cushion support pan, and chamfered surfaces of the necks of the first and second fastening devices guide rotation of the seat cushion support pan around a pivot axis defined by the necks of the first and second fastening devices.