The AST-700 bottom-side, screw-fastening work cell is designed to offer the ability to selectively fasten components using screws from the bottom side after odd-form placement. Uses a bowl-style system with blow feeder to automatically present and drive screws into the desired locations. Said to offer fully programmable x, y and z motion with in-line conveyor, positive PCB stop location/clamping, and programmable fastening locations. Includes a second chance feature with screw detection and purge function to prevent false error.