seamless cogwheel clockwork pattern

metallic metal metalline tin-pan brassy ironwork iron silver aluminium spring gear cogwheel gearwheel screw-wheel rackwheel nut screw-nut female screw internal helix male external washer puck spacer collar rove shim wire spiral spire scroll loop volute wheel trundle castor roller caster rivet clench clinch clincher steampunk steam punk mechanical mechanic machinal power-driven gray yellow silvery clockwork background texture pattern repeating continuous seamless