Ключевые слова: aged, antique, background, big, bolt, brown, butterfly, butterfly nut, butterfly shape, closeup, corroded, corrosion, dirty, equipment, fasten, fastener, hardware, industrial, industry, iron, isolated, macro, metal, metallic, nut, object, old, rough, rust, rusted, rusting, rusty, rusty metal, screw, spiral, steel, thread, threaded, threads, tool, vintage, weathered, white, wing, wingnut, wings nut, worn,