metal screws and nuts; metal springs; cold-formed steel, namely, non-threaded bolts and nuts; fittings for electrical circuits, tension and suspension fittings for telecommunication cables as well as optical ground wire and all-dielectric self supporting cable and helically formed fittings for tension and suspension purposes, namely, metal clamps such as a vibration damper, a spacer-damper, an arcing horn, a rotating clamp spacer, an earth wire suspension assembly, an armor rod suspension clamp and a wedge typ tension clamp

fittings for electrical circuits, namely, metal clamps (such as a vibration damper, a spacer-damper, an arcing hem, a rotating clamp spacer, an earth wire suspension assembly, an armor rod suspension clamp and a wedge type tension clamp) and other components (excluding insulators) for insulator strings used in high, medium or low voltage overhead lines substantially always sold together for the string ("string" is an intermediate insulating part between a tower structure for overhead lines and the conductor, to isolate the tower from the conductor); connectors for high, medium and low voltage substations; connectors for railway catenary systems; connectors for underground cables; tension and suspension fittings for telecommunication cables as well as OPGW, ADSS (such as vibration damper, a spacer-damper, an arcing hem, a rotating clamp spacer, an earth wire suspension assembly, an armor rod suspension clamp and a wedge type tension clamp); helically formed fittings for tension and suspension purposes (such as vibration damper, a spacer-damper, an arcing hem, a rotating clamp spacer, an earth wire suspension assembly, an armor rod suspension clamp and a wedge type tension clamp); and anti-vibration devices for electrical conductors (stranded conductors and tubes)