Ключевые слова: abstract, anchoring, background, bolt, broken, brown, circle, closeup, construction, corroded, corrosion, design, dirty, element, engineering, equipment, fastener, grunge, hardware, head, industrial, industry, iron, isolated, macro, material, mechanic, metal, metallic, nut, old, pattern, rough, rust, rusted, rusting, rusty, scratch, screw, steel, still, technology, texture, threaded, tool, vintage, weathered, white, worn,