A chair is disclosed having a mechanism for assembling and disassembling a seatback thereto. The mechanism, which is fixed to the base of the chair, comprises a coupling plate having slots for receiving bolts from the seatback seat posts. Rotatably coupled to the coupling plate is a locking plate that when rotated about a fastener, secures a bolt from the seat post into slots in the locking plate and coupling plate, thereby securing the seatback to the base of the chair.