man tightens the nut with a wrench.

adjustable assebling assemblage assembling assembly bolt chrome detail dismantling door electric element equipment finger fitting gate gear hand holding human installation iron job maintenance male man manual mechanic mechanical mechanism mending metal metallic mounting moving new nut object occupation opener part parts person professional repair replacement roller rolling screw service shiny shutter silver spanner spring steel structure swing system technology tighten tightening tightens tool upkeep warehouse work worker wrench