Ключевые слова: background, black, bolt, business, chrome, closeup, connection, construction, detail, engineering, equipment, fastener, fastening, foreground, glossy, group, hardware, head, industrial, industry, iron, isolated, machine, macro, maintenance, material, mechanic, metal, metallic, nut, object, pattern, reflection, repair, screw, service, spanner, stainless, steel, technology, texture, threaded, threads, tool, white, zinc,