A beam clamp (124) for a passenger seat includes a keyhole (126) configured to flex outwardly from an un-flexed position to a flexed position. The diameter of the keyhole in the un-flexed position is less than the diameter of the keyhole in the flexed position. A method of assembling the passenger seat includes assembling a seat base and connecting a seat back to the seat base. Assembling the seat base includes flexing the keyhole of the beam clamp outwards from the un-flexed position to the flexed position and inserting a support beam within the keyhole in the flexed position.