Steel Swivel Chair Chassis Support Arm Metal Chair Base Assembly Screw Holes Swivel Base Plate Adjustable

This black metal swivel chair chassis forms a sturdy foundation for workspace seating, combining a stamped steel mounting plate with an upright support column central socket. Designed as a chair base support, it provides the connection point for the seat and mechanism, helping create a stable metal chair base assembly. The stamped plate includes corner screw holes for secure mounting, while the shaped layout supports straightforward chair mechanism base installation. A manual adjustment lever is integrated into the swivel chair chassis, adding a practical control point for mechanism setup and use. Built for seat support and mechanism alignment, this chassis component helps complete a functional chair base for everyday office seating.