... fittings are used to restrain aerial vibration of conductor and ground wire of overhead transmission lines.Armor rods are ... to protecte the conductor by reducing the bending, compresion, and abration at the support point.Protection flashover against damage ... .line fittings ,iron pieces for power line,turnbuckle, thread, nuts and bolts, shackles, chains, thimble, wire rope grip.tension clamp,suspension ...