Abstract: An improvement to a conveyor system is disclosed which comprises a system of magnets and removable ferromagnetic strips which may be easily attached to Printed Circuit Assemblies (PCA's). In one preferred embodiment, the magnets are mounted to brackets which are bolted to the conveyor chain. These magnet assemblies act to secure the PCA's which have clip-on stiffeners affixed to their leading edges. The PCA's are thereby prevented from sliding on the conveyor chain as it moves up and down inclines. The likelihood of damage to PCA's on the conveyor system is thus reduced. The PCA's are released from the magnet assemblies by the shearing action produced by the conveyor chain as it rounds the return roller at the end of the coveyor line.