old metal male female square nut screw nail heads strong metal big size attached concrete electric pole

iron wood furniture lighting brown table floor flooring metal leather shelf textile art hardwood chair carving antique big bolts building carpenter chrome clincher construction detail equipment fasteners female screw group gudgeon hardware head helix industrial industry isolated male material metalwork nails nut object old pin plug realistic repair rivet riveter round screw-bolt set side silver steel symbol thread tool top toreutics view washer white square nail heads strong size attached concrete electric pole screws attach structure wall house background