Mechanical components, gears, machine tool accessories, springs, seals, separation equipment, welding materials, fasteners, connectors, bearings, transmission chains, furnace heads, chain locks, sprockets, casters, Universal wheels, chemical pipelines and accessories, pulleys, rollers, pipe clamps, work tables, steel balls, rolling balls, wire ropes, bucket teeth, hanging pulleys, hooks, grapples, straight-through, rollers, conveyor belts, nozzles, nozzle joints, Gold, silver, copper, iron, and tin are hardware, door locks, faucets, handles, hinges, showers, etc. Hardware actually has two meanings: 1. Hardware: Hardware refers to the five types of gold, silver, copper, iron, and tin. A common metal element, the term was later extended to refer to common metal products, so hardware stores sell more than just these five metals.