Ключевые слова: background, bolt, brass, chrome, close, cold, connection, connector, elastic, elasticity, engineering, fasteners, fastening, fitting, fixing, flex, flexibility, flexible, industrial, industry, iron, isolated, material, mechanic, mechanical, metal, metallic, nickel, nut, pipe, pipeline, plumbing, pressure, riubber, sanitary, screw, silver, stainless, steel, stock, stud, supply, tap, tighten, tool, water, white,