Ключевые слова: abstract, background, bolt, cells, closeup, component, connection, construction, device, element, hardware, industrial, industry, iron, ironware, item, lot, machinery, macro, manufactured, many, mechanic, metal, monochrome, nut, object, parts, product, ring, rows, screw, shim, shiny, silver, slim, stainless, steel, themes, tool, ware, washer, white, work,