Ключевые слова: abstract, assorted, background, bolt, border, build, closeup, construction, copper, copy, engineering, equipment, fastener, fitting, frame, gray, group, hardware, industrial, industry, iron, machine, manufacturing, mechanic, metal, nail, nut, objects, pattern, repair, screw, shiny, silver, space, steel, strength, supplies, technology, texture, threads, tool, variety, vintage, washer, welding, work,