Ключевые слова: abstract, background, bolt, chrome, close, closeup, concept, connection, construction, corrosion, detail, engineering, equipment, grunge, hardware, head, heavy, hexagon, industrial, industry, iron, isolated, machine, macro, manufacturing, material, mechanic, mechanical, metal, metallic, metalwork, nut, object, pattern, plane, round, rust, screw, solid, spiral, stainless, steel, technology, texture, thread, tighten, tool, weathered, work, wrench,